Pelizaeus-Merzbacher Disease (PMD) is a rare X-linked recessive leukodystrophy caused by mutations in the proteolipid protein-1 gene on the Xq22.2 chromosome and is characterized clinically by nystagmus, spastic quadriplegia, ataxia and developmental delay. There is no definitive curative treatment. We report here a successful matched unrelated umbilical cord blood stem cell transplantation for PMD in a 2-year-old boy. He was conditioned with Busulfan, Cyclophosphamide and Rabbit anti-thymoglobulin. MMF and Cyclosporine were used as graft-vs-host disease prophylaxis. His neutrophil engrafted on day+29 and platelets on day+33. It lead to disease stabilisation and improvement in development of the child with PMD.

A 13-month-old healthy patient without COVID-compatible symptoms and no known sick contacts presented to the emergency department with an esophageal coin. New institutional policy requiring pre-operative SARS-CoV-2 testing was positive for the virus. Additional precautions were taken in the operating room to successfully prevent transmission of the virus.

The atrial septal aneurysm is a rare cardiac abnormality that is usually detected during routine echocardiography or evaluation of cases with thromboembolism. We report a 62 years old male who presented with abdominal pain and bleeding per rectum found to have ischemic colitis and atrial septal aneurysm on transesophageal echocardiogram.

Aims of the study Patient comprehension is a critical part of meeting standards of informed consent in study designs. The aim of the study was to determine if extant literature exists to require clinicians to disclose the specific risk that COVID-19 vaccines could worsen disease upon exposure to challenge or circulating virus. Methods used to conduct the study Published literature was reviewed to identify extant preclinical and clinical evidence that COVID-19 vaccines could worsen disease upon exposure to challenge or circulating virus. Results of the study Based on the history of coronavirus vaccine development, COVID-19 vaccines designed to elicit neutralizing antibodies may sensitize vaccine recipients to more severe disease than if they were not vaccinated. Vaccines for SARS, MERS and RSV have never been approved, and the data generated in the development and testing of these vaccines suggest a serious mechanistic concern: that vaccines designed empirically using the traditional approach (consisting of the unmodified or minimally modified coronavirus viral spike to elicit neutralizing antibodies), be they composed of protein, viral vector, DNA or RNA and irrespective of delivery method, may worsen COVID-19 disease via antibody-dependent enhancement (ADE) of either infection or disease. Conclusions drawn from the study and clinical implications The specific and significant COVID-19 risk of ADE should have been and should be clearly and emphatically disclosed to research subjects currently in vaccine trials, as well as those being recruited for the trials and future patients after vaccine approval, in order to meet the medical ethics standard of patient comprehension.

Objective: To evaluate vaginal birth safety by comparing the results of cesarean birth in twin pregnancies with the first twin in vertex presentation. Materials and methods: A retrospective cohort study of vertex-presenting twin pregnancies between 32 weeks 0 days and 38 weeks 6 days of gestation was conducted at our hospital from January 2013 to December 2015. The study population was divided according to the mode of birth. The primary outcome was early neonatal mortality, and secondary outcomes related to maternal and perinatal clinical characteristics were analysed between the groups. Results: Of 45,166 births, 1.92% (n = 869) were twin pregnancies. Of the 295 pregnancies meeting the study criteria, 30.16% (n = 89) were in the vaginal birth group, while the remaining 69.84% (n = 206) were in the cesarean birth group. In the vaginal birth group, all the first twins were delivered via vaginal birth, while among the second twins, 82.03% (n = 73) were delivered via vaginal birth, and the remaining 17.97% (n = 16) were delivered via cesarean birth. In the vaginal birth group, the early neonatal mortality rate was 2.24% (n = 2), and it was 0.97% (n = 2) in the cesarean birth group. All of the deaths occurred in pregnancies under 37 weeks of gestation. Conclusion: The neonatal outcomes between the vaginal birth and cesarean birth groups were similar in term pregnancies with the first in twin vertex presentation, whereas adverse neonatal outcomes were increased in the vaginal birth group in preterm second twin pregnancies.

The contingency of the connection of π (ratio of a circle’s circumference to its diameter) with the DNA (genetic material) sounds like impossible. In fact, they are unrelated things, and some may characterize it as incoherence and nonsense. That is, something similar, as if you want to connect the length of a person’s shadow with the money he has in his pants. In the case you insist, some may guess the double helix of DNA and its relationship to the cycle. Moreover, circular DNA has also been found in organisms. They use to say that life and its evolution, as well as the history of things, have a spiral shape. Let us get things in the right order: DNA building blocks are called nucleotides and have a specific chemical structure. Depending on the nitrogenous base they contain, they are divided into nucleotides of Adenine (A), Thymine (T), Guanine (G) and Cytosine (C). Their molecular weights are 331, 322, 347 and 307, respectively. Prime are the numbers 331, 347, 307, while 322 is composite. The symbols A, T, G, C, will help us symbolize at the same time the respective nucleotides, the respective nitrogenous bases of the nucleotides and their molecular weights. A mathematical formula that connects these numbers and therefore the molecular weights of DNA nucleotides, is: G = . There is no need for further analysis, as it results from a combination of representations between the nucleotides.For the record, from the sums or the differences of other representations between the nucleotides, arise the following: Α + T + G + C = 1307, Α + T = 653, the graph ΑΤ – GC = 53, the (G + T) – (A + C) = 31 etc. are all prime numbers. The latter, leads us to look for more things. The following remains applicable:G + T – A – C = 3114 G + 6T – 14A – 6C = 314141 G + 59T – 141A – 59C = 31411415G + 585T – 1415A – 585C = 3141514159G + 5841T – 14159A – 5841C = 314159 etc. Table 1The relation of each series gives us π = 3,14159… with one, two, three etc. decimal digits multiplied by 10, 100, 1000 etc. respectively. Furthermore, the sum of the coefficients of G and T, respectively of A and C, is 2, 20, 200, 2000, 20000 etc. a special connection of DNA with π . Proportionally, the approximation ofπ by Archimedes, may come to someone’s mind. On one hand, there were sides of regular polygons inscribed, whereas here are by proportion nucleotides. We will try to ”mathematize” various processes and see how far we can go. Let two consecutive series e.g. ν and ν+ 1 . The coefficients of the nucleotides of the nth order are φ and x with a total result of Ζ1. Respectively the coefficients and the result of the ν  +1 series are y, ω and Ζ2. In particular:φG + xT – φΑ – xC = Z1 (1)yG + ωT – yΑ – ωC = Z2 (2)Example:  for the third row (ν = 3) there is φ = 141, x = 59, Z1 = 3141. For the fourth row (ν + 1 = 4), y = 1415, ω = 585, Z2= 31415 (see table 1) etc. From the previous there is φ + x = 2 ⋅ 10ν−1 (3) and y + ω = 2 ⋅ 10ν (4). For example, for ν = 2, φ + x = 20 and y + ω = 200 etc.Next: From (1) φ(G – A) + x (T – C) = Z1 (5) and from (2)y (G – A) + ω (Τ – C) = Z2 (6).Since G – A = 347 – 331 = 16 and T – C = 322 – 307 = 15 the relations (5) and (6) can be written respectively:16φ + 15x = Z1 and 16y + 15ω = Ζ2. These last relations give us the possibility to connect all six factors of equations (1) and (2) in an equation. Specifically, to equalize the representations e.g. equivalent to 16. That is 16 = and to arrive at the equationZ2φ = Ζ1y – 15xy + 15φω (7).Additionally, those that equate to 15, and end up in the relationshipΖ2x = Z1ω – 16φω + 16xy (8).From (1) and (2) by division by members easily results the   (9).By studying the initial table of series with the arithmetic coefficients, other interesting things are being noticed, too, by which a specialist in number theory and beyond , would be pleasantly surprised. Let us take for instance the numerical differences of the coefficients (e.g. those corresponding to nucleotides G and T), of two consecutive series and compare them. We see that the difference of the coefficients in the ν + 1 series, is equal to ten times the difference of the corresponding coefficients in the ν series, plus twice the digit of the units of Z2 or respectively of the coefficient of G of the ν + 1 series. Generally, y – ω = 10 (φ – x) + 2α (10), where α is the digit of the units we mentioned.Example between third and fourth series (ν = 3): 141 – 59 = 82 1415 – 585 = 830830 = 10 · 82 + 2 · 5 etc. It easily follows from the relation (10) and (4) y = 10ν + 5(φ – x) + α (11). For example,ν = 4 y = 104 + 5 (1415 – 585) + 9 ⇒ y = 14159 (coefficient G of ν + 1 = 5 series) etc. It also holds for y = 10φ + α and Z2 = 10Z1 + α. Moreover, interesting is the difference between the crossed products of the coefficients, in two consecutive series. To make a long story short, the general relation xy – φω =2 · 10ν–1α (12) is valid.An example between the third and the fourth series: 141 · 585 = 82485,59 · 1415 = 83485 83485 – 82485 = 1000 1000 = 2 · 102· 5 etc. Other mathematical relations can also be found and after all a question can arise in everyone: If we know φ, x, Ζ1(previous series) and the relationship between the coefficients of the nucleotides of the next series (as well as of other mathematical relations), can we calculate the Ζ2 or the α? Namely the digits of the units Ζ2 and consequently the next decimal digit of π ? No matter how many attempts I made, no matter how many combinations of procedures and mathematical formulas I used, it always turned out for Ζ2 and α a representation that led to zero. The factors were contradictory and resulted in zero results. This forced me for a long time not to deal with the issue (to leave it in the drawer of my office). At one point I thought (the thought matured), that some others, based on the ideas of the essay, can find other better and more interesting things and why not some bio-computational approach of digits of π . On the other hand, why should the essay have only this goal? After all, mathematicians have found mathematical formulas and special algorithms, to calculate through the use of computers, trillions of digits of π , and this has no end. The essay should not be based solely on the calculation of decimal places of π , but to show the beauty of mathematical relations in DNA, in relation to π and where else it arises, etc. Unfortunately, what we use to say in many cases was true for me: “I couldn’t see the woods for the trees”. I missed something, that is self-evident for every mathematician: “mathematicians do not do what they do, because it is necessary and no one knows in advance if something is needed or not ”. In the end, every cloud has a silver lining. Along the way I found various things. Specifically, at the beginning of the essay we saw some representations of nucleotides, which in relation to their molecular weights give prime numbers. We can easily and “artificially” give DNA chains with a total molecular weight of prime numbers. Example: from the part of a DNA chain that contains scattered but in total 29Α, 59Τ, 131G, 107C, results a molecular weight of 106903, which is the prime number. The numbers 29, 59, 131, 107 have been chosen to be prime numbers in this example, while the complementary part of the chain with a set of nucleotides 29T, 59A, 131C, 107G has a molecular weight of 106213, which is also a prime number. These sums result from the addition of nucleotides in free form. If we remove the water molecules (which has a molecular weight of 18) that are removed when the nucleotides are connected together by phosphodiester chemical bonds, in the second chain (is it transcribed?) has a molecular weight of 100363 which is also a prime number. One might also wonder what is happening in real conditions. Do the first numbers define properties there? Do they leave their mark? What happens, for example, to the genes, to their regions (introns) that do not encode amino acids, to the regions of DNA (which are the most) and do not encode proteins, where they encode, etc. Do they play a role in their presence or absence? Let it be researched. Of course, the most important thing in DNA is the sequence of nucleotides, because it determines the order of amino acids in proteins based on the genetic code. However, the fact that the prime numbers “have a finger in every pie” can make someone wonder whether there is a deeper connection between the evolution of genomic information (DNA) through natural selection, mutations, etc. and prime numbers. In addition, in the mathematical formula (mentioned at the beginning) and it connects the molecular weights of the nucleotides, if we put in the place of C and G some prime number, we calculate the product Α·Τ. If we put (in proportion of the nucleotides) in A a prime number and in T a composite that expresses their number, the sum of the numbers as in DNA is very often a prime number. Example: C=3, G=7 we find Α · Τ = 54. We put A = 3 and therefore T is 18. The sum 3 + 7 + 3 + 18 = 31 (prime). If A = 2 and T = 27 does not result a prime one. The mathematical formula is to function as a ”machine” for the production of prime numbers. Let the prime one be investigated in relation to the other nucleic acid, the RNA, which is also composed of nucleotides. RNA is connected to the DNA from which it is derived, as well as to the proteins produced by the encoded information. Who knows whether this perspective will let us study Covid-19 in a better way? We continue with something else amazing. The first epigenetic lesion (mutation) found in DNA was the cytosine methylation. Methylation therein means the addition of a methyl group, i.e. a small chemical molecule consisting of one carbon atom and three hydrogen atoms with a total molecular weight of 15. The cytosine nucleotide gains molecular weight 307 + 15 = 322, equal to that of thymine. From the prime number of cytosine, we come to the composite number of thymine. And here a “confusion” arises. This mutation in cytosine causes various phenomena (inactivation of genes, or their activation above normal, depending on the number of methylations, etc.) that can result in various diseases (cancers, etc.). We see the cytosine mutation to occur on one hand at the chemical level of its structure which is the most important, but also in the equation of the molecular weight of its nucleotide with that of the nucleotide of another chemical base (thymine) of DNA. Apart from the chemical change and the change in the numbers in some proportion, they play their role at least in the specific event. Shall we say something that may seem strange to many? Can further or basic mathematics cure, in the future, diseases if we associate some features with them, through some mathematical model? Biomathematics (connection of mathematics and biology) something similar to biochemistry and biophysics (connection of chemistry and physics with biology respectively), have offered and will offer more in the future, to the study of life in living organisms. Biomathematics (biostatistics is a subset of them), in addition to the huge contribution to science, can also offer career prospect to mathematicians. Let us conclude the essay with something important that was found along the way. In Table 1 (in the various series), we saw the numerical coefficients of the nucleotides and the relationships, developed between them. Taking into account the quotients (ratios) of these coefficients of each series (see table 2), we observe the following:1/1 = 114/ 6 = 2,33333333…141/ 59 = 2,389830508…1415/ 585 = 2,418803419…14159/ 5841 = 2,424071221…141592/ 58408 = 2,424188467…………… ……… …………………2,42422678468…Table 2With the help of PC and for a large number of divisions (the computer ”endured” up to 307 digits of π ) the ratio of coefficients (e.g. κ and λ) after the 12th digit, tends steadily to a very specific number, the 2,42422678468…At first glance, this number seems random. And I wish to protest very strongly at this. This number is very close to the three seconds of the number Φ (golden ratio). That is \(\frac{3}{2}\) Φ = 2,427050983… A connection of DNA other than π and Φ = 1,618033988… And as we colloquially say in Greek, a study of DNA “in pi and fi”. That means very rapidly. Nonetheless, the approximate formula π Φ = between π and Φ, is well-known to mathematicians. We continue: the bio-computer of π can work even approximately with the system of equations: κ + λ = 2 · 10ν–1  and\(\frac{κ}{λ}\approx\frac{3}{2}Φ\) or \(\frac{κ}{λ}\) = 2,42422678468… Its calculation (the digit of its units) determines the ninth decimal digit of π .After all these, what could we assume as a conclusion? Is the ultimate goal of nature to achieve the perfect circle or the perfect spiral? We know that the logarithmic spiral is connected to Φ. Probably when this is achieved (case of DNA formation), life is created. Life in the form of DNA loves the perfect circle, the perfect spiral and does not reject the golden ratio of things. Mutations that occur continuously and in very large numbers and that lead to the removal of the stereochemical structure of DNA (functionality and the information it contains) from the perfection of the cycle, nature itself rejects them. It allows only those that meet certain conditions (maintaining shape, functionality and information) to survive, and which are generally legitimate and can support life.

Reimplantation of the supra-aortic vessels can be challenging with Thoraflex Hybrid. A device modification made the vessel lengths more appropriate and the position of the neo-vessels in the chest avoided malpositioning and kinking and facilitated sternum closure; this may improve operating times as well as allowing complete and continuous cerebral trivascular perfusion and corrects positioning of the intrathoracic vessels.

The variety and widespread of coronavirus in natural reservoir animals is likely to cause epidemics via interspecific transmission, which has attracted much attention due to frequent coronavirus epidemics in recent decades. Birds are natural reservoir of various viruses, but the existence of coronaviruses in birds, especially in central China, has been barely studied. The majority of bird coronaviruses belongs to the genus of Deltacoronavirus. To explore the diversity of bird deltacoronaviruses in central China, we tested fecal samples from 415 birds in Hunan Province, China. As the result, we have identified four novel deltacoronavirus stains (HNU1-1, HNU1-2, HNU2 and HNU3) with divergent S genes abounding in common magpies in mainland China. Comparative genomic analysis on the four complete viral genomic sequences showed that these novel magpie deltacoronaviruses containing three different S genes homologous to those of deltacoronaviruses discovered in swine and sparrows. The S genes of HNU1-1 and HNU1-2 showed 93.8% amino acid sequence identities to that of thrush coronavirus HKU12, and the S genes of HNU2 and HNU3 showed 71.1% amino acid sequence identities to White-eye coronavirus HKU16 and sparrow coronavirus HKU17, respectively. Recombination analysis showed that frequent recombination events of the S genes occurred among different deltacoronavirus strains. Two novel putative cleavage sites at the junctions between nonstructural proteins in the HNU CoVs were found. Bayesian phylogeographic analysis showed that the south coast of China might have played a key role in seeding the bird deltacoronavirus epidemics. The results demonstrated that common magpie in China carries diverse deltacoronaviruses with novel genomic features, which indicate an important source of environmental coronaviruses in the biosphere closed to human communities. These findings may contribute to prevention and control the potential coronavirus epidemics.

INTRODUCTION: Information regarding open garbage dumps may cause public health dilemma within the community and cause stray dog proliferation. Most wastes have a family origin and stray dogs are largely attracted by possible wastes from cookery or former foods. The information, besides as attitudes and perception on rabies, is thus vital for the prevention of human deaths. Information regarding major factors associated with increased dog population can spot awareness gaps which can influence bar practices plus lead to needless deaths. METHODS: Two sources i.e. primary and secondary sources were utilized for identifying the probable factors responsible for increased dog population. These factors primarily included garbage management, specific control measures for dog population by stakeholders and perception of people. The secondary source includes Srinagar Municipal Corporation, for collecting the relevant information RESULTS: Regarding the major factors associated with increases dog population, the respondents (both the people 99.68% and commercial 100%) believed that open garbage dumps are a public health barrier in the area and commence to stray dog proliferation. Also combined rabies control measures coupling dog population control, removal of dog free-roaming and proliferation must be fulfilled. Till date around 2,000 sterilizations were conducted and also around 2,000 stray dogs were administered the anti-rabies vaccine. CONCLUSION: Open garbage dumps are a public health obstacle in the Srinagar area and they commence to stray dogs proliferation. Till date only around 2,000 sterilizations were conducted and also around 2,000 stray dogs were administered the anti-rabies vaccine, however, this is too less in comparison with the total population of dogs and still, the ballot of dogs from the particular zones of Srinagar is deficient.

The generation of sugar from photosynthesis and its utilization by sugar metabolism jointly determine the leaf sugar status, which conversely represses photosynthesis. The objective of this study was to investigate the effect of leaf sugar metabolism on photosynthesis in two contrasting grape (Vitis vinifera L.) genotypes, Riesling (RI, high level hexose) and Petit Manseng (PM, low level hexose). The total hexose and glucose contents of the RI leaves were significantly higher than those of PM relative to the low level of fructose. The activity of cell wall invertase for sucrose hydrolysis and the abundances of VvCWINV, VvHT4, VvTMT1, VvFK1 and VvFK1 transcripts were higher in RI leaves. The abundance of hexokinase transcript (VvHXK2) for signal sensing was also higher, while VvHXK1 was lower for glucose phosphorylation. The net photosynthetic rate, stomatal conductance, transpiration rate and chlorophyll content of RI leaves were lower than those of PM and negatively correlated with the hexose and glucose contents and the VvHXK2, VvCWINV, VvHT4, and VvTMT1 transcript levels. These results suggest that variation in sugar metabolism by inter-varieties alters the cellular sugar status, which is important for regulating photosynthesis. This study provides insights on improving the photosynthesis of cultivars by metabolic modification for breeding.

Plants alter their morphology and cellular homeostasis to promote resilience under a variety of heat regimes. Molecular processes that underlie these responses have been intensively studied and found to encompass diverse mechanisms operating across a broad range of cellular components, timescales and temperatures. This review explores recent progress throughout this landscape with a particular focus on thermosensing in plants. Direct temperature sensors include the photosensors phytochrome B and phototropin, the clock component ELF3 and an RNA switch. In addition, there are heat-regulated processes mediated by ion channels, lipids and lipid-modifying enzymes taking place at the plasma membrane and the chloroplast. In some cases the mechanism of temperature perception is well understood but in others this remains an open question. Potential novel thermosensing mechanisms are based on lipid and liquid phase separation. Finally, future research directions of high temperature perception and signalling pathways are discussed.

Ascending aortic pseudoaneurysm is a rare complication in heart transplantation. Surgery is the most conventional management, but, in some cases, it is high-risky. We report the case of a ten-year-old child with heart transplantation that developed ascending aortic pseudoaneurysm in the aortic anastomosis successfully treated with two covered stents through endovascular management. To our knowledge, this is the first report about endovascular therapy of an ascending aorta pseudoaneurysm after heart transplantation in a pediatric patient.

Background The theory of “hit and run” raises a possibility of novel COVID19-associated Parkinsonism cases, as well as worsening of symptoms in patients with pre-existing Parkinson’s Disease (PD). Aim/method To demonstrate that the COVID19 infection may lead to long lasting immunological and neurological changes at PD patients.

We consider nonlocal problems in which the leading operator contains a sign-changing weight which can be unbounded. We begin studying the existence and the properties of the first eigenvalue. Then we study a nonlinear problem in which the nonlinearity does not satisfy the usual Ambrosetti-Rabinowitz condition. Finally, we study a problem with general concave-convex nonlinearities.

Objective: To compare the effect of a hysteroscopic niche resection with a Levenorgestrel-releasing intrauterine device (LNG-IUD) on postmenstrual spotting in women with a symptomatic niche in the uterine cesarean scar. Design: Single center, prospective cohort study. Setting: A hospital affiliated to a medical college in China. Population: Women diagnosed with a niche by MRI scan and postmenstrual spotting of at least two days. Method: Women were allocated to two groups based on the shared medical decision-making approach, and were followed up for 1 year after treatment. Main outcome measures: The primary outcome was effectiveness in reducing postmenstrual spotting. Secondary outcomes were menstrual characteristics, direct medical costs, complications and side effects. Results: Effectiveness of LNG-IUD was significantly higher than a hysteroscopic niche resection during the first year, based on linear mixed models (P=0.009), and the effectiveness increased overtime within 1 year. Postmenstrual spotting reduced statistically in both groups. More slight side effects, although not statistically significant, were reported in LNG-LUD group at obviously lower direct medical costs. Conclusion：LNG-IUD is more effective in the treatment of postmenstrual spotting from the 6th month onwards than a hysteroscopic niche resection in women with a symptomatic niche at lower direct costs. Key Words：Niche, uterine cesarean scar, hysteroscopy niche resection, LNG-IUD, postmenstrual spotting, amenorrhea Tweetable abstract: LNG-IUD is more effective in the treatment of postmenstrual spotting related to a niche than hysteroscopic niche resection.

Objective To investigate the relationship between the bladder microbiota and overactive bladder (OAB) symptom severity. Design Cross-sectional study of female OAB patients who contributed catheterised urine samples, completed validated symptom questionnaires, and provided demographic data. Setting Nanfang Hospital, Southern Medical University. Population Adult women with overactive bladder symptom. Methods 70 OAB patients were recruited, finished symptoms questionnaires, demographic data, and contributed catheterised urine samples that were analysed by 16S rRNA gene sequencing. Main outcome measures Associations between the total/sub scores of Overactive Bladder Symptom Score (OABSS) and bladder microbiota (diversity, overall community structure, and specific organisms). Results We found that bacterial diversity (Simpson index, P = 0.024) and richness (Chao1, P = 0.023) of mild patients (OABSS ≤5, N = 17) were lower than those of moderate/severe patients (OABSS > 5, N = 53). And bacterial communities of two groups were significantly different. Further, there were positive correlations between scores of OABSS and both richness (Chao1, P = 0.002) and diversity (Shannon index, P = 0.044) of urinary microbiome. Some bacterial genera (e.g., Porphyromona and Prevotella) were significantly related to sub-symptoms of OAB. Conclusion This cross-sectional analysis revealed that increased diversity and richness of the bladder microbiota was associated with worse OAB severity, and specific urinary dysbiosis may constitute an etiological factor in exacerbating functional bladder disorders. Keywords overactive bladder; LUTS; urinary microbiome; urinary microbiota; bladder microbiota Funding National Natural Science Foundation of China (Grant No. 81870522) Tweetable abstract Bladder microbiota is associated with female OAB severity.

A final Computer-assisted planning with 3D printing jaw reconstruction after two previous unsuccessful surgical reconstructions which leaded to pain, osteomyelitis and severe mandibular bone loss. The conjunction of actions used in this case allowed a successful and predictable outcome.

Abiotrophia defectiva (A defectiva), a rare cause of bacterial infective endocarditis(IE) often presents with pyrexia and florid sepsis. This case highlights that A defectiva IE can present non-specifically in older frail patients without classical clinical findings. A. defectiva may be associated with a high proportion of culture-negative IE.

Objective: To compare disease presentation and outcome in Aboriginal and non-Aboriginal children with acute leukaemia and to assess the impact of remoteness and area-based socioeconomic disadvantage. Design: A retrospective review of children treated for acute leukaemia from South Australia (SA), Northern Territory (NT) and Western Australia (WA) between 2009 and 2018. Setting: Women’s and Children’s Hospital (WCH), Adelaide and Perth Children’s Hospital (PCH) - the sole referral sites for paediatric cancer for SA, NT and WA. Participants: Eligible patients, aged between 1 day and <18 years, diagnosed with acute leukaemia. Main Outcome Measures: Leukaemia diagnosis and overall survival. Results: Analysis of 455 children treated for acute leukaemia showed inferior survival outcomes were associated with remote/very remote localities (p=0.004). Five-year overall survival was 91.7% (95% CI: 87.9%-94.3%) for children with ALL and 69.8% (56.7%-79.5%) for AML. A large percentage of Aboriginal children from SA/NT were diagnosed with AML compared to others (60.0% vs. 14.4%, p=0.001). A trend towards inferior overall survival was seen for Aboriginal children with ALL compared to non-Aboriginal children (82.4% vs. 92.2%, p=0.07) and 55.6% were high-risk by study criteria; however, MRD testing did not identify any high MRD cases. Aboriginal children were less likely to be enrolled on clinical trials (34.5% vs. 53.1%, p=0.03) and more likely to be lost to follow-up (41.4% vs. 13.2%, p<0.001). Conclusion: Aboriginal ethnicity and geographic remoteness of residence are adverse prognostic factors for Australian children with leukaemia. Additional strategies are required to ensure improvements in follow-up and survival of these children.

Background Obesity is a chronic disease that is increasing in prevalence in adults, adolescents, and children and it is now considered to be a global epidemic. Current recommendation for treatment of Chronic Myeloid Leukemia (CML) does not take in consideration the weight of the patient and doses ofTKIs

This paper presents an insight on the major ion chemistry of Chaturangi glacier meltwater and chemical weathering processes to identify ionic sources and factors controlling the ionic composition of meltwater during the ablation year 2015 and 2016. The analytical results show that the meltwater is slightly acidic in nature with Mg-HCO3 and Ca-HCO3 dominated hydrochemical facies in years 2015 and 2016 respectively. In glacier meltwater, Ca2+ is the most dominant cation and HCO3- is the most dominant anion in both the years. Due to less anthropogenic influence, chemical weathering of the surrounding rocks is the foremost mechanism, controlling the hydrogeochemistry of meltwater. The gibbs plot and mineralogy of surrounding rocks suggests that ionic concentration of meltwater is mainly controlled by rock weathering with little contribution from the atmosphere. A comparatively higher contribution of (Ca+Mg) in total cations and higher elemental ratio of (Ca+Mg)/(Na+K) (1.47±0.14) and (1.44±0.28) in year 2015 and 2016 respectively, clearly demonstrates that chemical composition is mainly controlled by carbonate weathering and partly by silicate weathering. Furthermore, the low elemental ratio of (Na+K)/TZ- (0.41±0.02) and (0.22±0.05) in 2015 and 2016 respectively also suggests that carbonate weathering is a dominant geochemical process controlling meltwater chemistry of the study area. In addition the ion denudation rate was also calculated for both the years. The results shows that cation denudation rate of meltwater of Chaturangi glacier were 32.84 and 22.30 ton/km2/ablation during 2015 and 2016 respectively, whereas the anion denudation rates were 205.43 and 170.24 ton/km2/ablation in 2015 and 2016 respectively.

Introduction The rapid spread of the pandemic caused by the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)(COVID-19) virus resulted in governments around the world instigating a range of measures, including mandating the wearing of face coverings on public transport/in retail outlets. Methods We developed a sequential assessment of risk reduction provided by face coverings using a step-by-step approach. The United Kingdom Office of National Statistics(ONS) Population Survey data was utilised to determine the baseline total number of community-derived infections. These were linked to reported hospital admissions/hospital deaths to create case admission risk ratio/admission-related fatality rate. Results Overall, we show that only 7.3% of all community-based infection risk associates with public transport/retail outlets. The reported weekly community infection rate was 29,400 new cases at the start (24th July). The rate of growth in hospital admissions and deaths for England was around -15%/week, suggesting the infection rate, R, in the most vulnerable populations was just above 0.8. In this situation, average infections over the evaluated 13week follow-up period was 9,517/week. With face covering of 40% effectiveness, this reduced average infections by 844/week, hospital admissions by 8/week and deaths by 0.6/week; a fall of 9% over the period total. If, however, the R-value rises to 1.0, then average community infections would stay at 29,400/week and face coverings could reduce average weekly infections by 3,930, hospital admissions by 36 and deaths by 2.9/week; a 13% reduction. These reductions should be seen in the context of 102,000/week all-cause hospital emergency admissions in England and 8,900 reported deaths in the week ending 7thAugust 2020. Conclusion We have illustrated that the policy on mandation of face coverings in retail outlets/on public transport may have limited value in reducing hospital admissions/deaths. Impact appears small compared to all other sources of risk, thereby raising questions regarding effectiveness of the policy.

Iron and manganese ions, as the main contribution indicator of super-class Ⅲ shallow groundwater in the western suburbs of Xi’an, seriously threaten the safety of local water supply and the health of residents. Based on data collection and hydrogeological survey, this paper studies the concentration of iron and manganese in groundwater by collecting and analyzing 52 groups of groundwater samples, and analyzes the possible sources of iron and manganese in consideration of human factors such as hydrogeological conditions and surface pollution input. The results showed: (1) The highest iron content exceeded the Class Ⅲ water quality standard by 1.03 times, and the highest manganese content exceeded the Class Ⅲ water quality standard by 3.92 times. The water sample points exceeding Class Ⅲ accounted for 9.5% and 26.2% of the total water sample points respectively. (2) The content of iron and manganese in the water of Feng River is 8.47% and 19.69% of the groundwater respectively. Therefore, the higher iron and manganese in individual wells near the source of Feng River have no obvious relationship with Feng River. (3) According to drilling data, the iron and manganese content in different rock masses is silty clay>round gravel>fine sand, medium-coarse sand, and the distribution of iron and manganese content is positively correlated. (4) In the experiment of the iron and manganese release law in the rock mass, it was observed that the iron and manganese in the overlying water experienced three stages of rapid increase, fall and stabilization. When the final release stabilizes, the release rate of manganese in the rock mass is higher than that of iron. The manganese content in the overlying water is 0.010~0.057mg/L, the release rate is 0.02%~0.05%, and the iron content is 0.004~0.023mg/ L, the release rate is less than 0.01%, and the higher pH in the water environment has a significantly higher inhibitory effect on the release of iron in the rock mass than manganese.

Quantitative attribution of changes in streamflow due to the non-linear relationship between climate change (CC) and land cover/land use change (LCLUC) in a hydrological system of the Yangtze River Source Region (YZSR) in the Qinghai-Tibetan Plateau (QTP) was measured. A combination of the SWAT model and a statistical technique known as One Factor At a Time (OFAT) and Innovative Trend Analysis (ITA) was carried out to achieve the study objectives. The hydro-climatic data from 1961-2016 and land cover/land use data of 1985, 1990, 1995, 2000, 2005, 2010, and 2015 were used. The results revealed that changes in annual streamflow during 1985-1990 were contributed by CC (+11.4 mm) and LCLU (+9.4 mm), accounting for 54.8 % and 45.2 % of the total combined impact of +20.7 mm. A more dominant effect of CC than LCLU also occurred for the periods between 1995 and 2000, 2000 and 2005, 2005 and 2010, 2010 and 2015, where CC and LCLU contributed to increasing the annual streamflow of 5.9 mm and 0.3 mm, respectively. However, a different pattern was observed in 1990-1995 where changes in streamflow were mainly attributed to LCLU rather than CC. It was observed that major LCLUC were found in 1990-1995 where low grassland decreased (-13,353 km2), bare land increased (+9,048 km2), medium grassland increased (+2,485 km2), water increased (+1,391 km2), high grassland increased (+2,329 km2), and wetland decreased (-1,927 km2). The ITA results showed that there is a rise in temperature, precipitation, and streamflow monotonically in the second half (1990-2016) as compared to the first half (1961-1989). In addition, it was found that temperature and precipitation were positively correlated (P<0.05) in high flow months (July and August), whereas negatively correlated in low flow months (November-March). The results of SWAT model simulation showed that CC (i.e. warmer climate) is the primary source of variations in streamflows of the Yangtze River Source Region.