Being able to perform surgery first-hand represents the backbone of every training program and the key to successful development of the new generation of skilful surgeons. In this issue of the Journal, Comanici et al. presented a thorough systematic summary of the current evidence on the outcomes of cardiothoracic operations performed by trainees.1 Taking for granted the importance of training young surgeons, it is paramount to identify and tackle any potential obstacles hindering the surgical growth of a trainee.

A symmetric bi additive mapping $D$, on a prime ring $R$ is called skew symmetric bi-Jordan derivation if it satisfies the following condition associated with the automorphism of $\alpha $ of $R$:% \begin{equation*} D( x^{2},z) =\alpha(x)D(x,z) +D(x,z)x \end{equation*}% The purpose of this paper is to prove some results concerning skew symmetric bi-Jordan derivation, as a generalization of symmetric bi-Jordan derivation.

In this paper we prove several optimal inequalities involving the hyperbolicity constant of complementary prisms networks. Moreover, we obtain bounds and closed formulas for the general topological indices A(G)=∑uv∈E(G) a(du,dv) and B(G)=∑u∈V(G)b(du) of complementary prisms networks.

We present the design of a phased, modulated, power distribution network for metasurface array antennas. The specific metasurface array design comprises a series of waveguides, each feeding a sub-array of dynamically tunable metamaterial elements that radiate at microwave (X-band) frequencies. To remain a one-port device, the composite array requires a power divider that can excite each branch waveguide with equal power. Further, the power divider must also apply a prescribed phase shift to each branch waveguide to mitigate metasurface-specific grating lobes. The presented design features hollow metal waveguides, with a conducting sheet patterned with metamaterial irises serving as the upper wall. A single hollow metal main waveguide feed is used to couple power to each of the branch waveguide. Carefully oriented slots control both the magnitude and phase of the field distributed from the main feed to each branch. All waveguides can be machined from a single block of metal, with a metamaterial-patterned printed circuit board laminated to the top of the assembly. The resulting design is mechanically robust and capable of high power operation, while retaining the low-cost, low power consumption, lightweight and low-profile features common in metasurface antenna designs.

The fermentation for the production of succinic acid (SA) outperforms other methods by low energy consumption and environmental benignity, with the resulted products mainly as disodium succinate (DSA). By the direct esterification of DSA using CO2 and CH3OH, it is expected to avoid the use of inorganic acids in downstream industrial esterification of bio-based DSA. By high-resolution mass spectrometry analysis and theoretical calculation,this study establishes that the direct esterification of DSA consists of three steps by first forming 3-carboxypropanoate,then monomethyl succinate (MMS),and finally DMS. The reaction kinetics of DSA direct esterification is also investigated by experiment and simulation with MATLAB, and the reaction kinetics equation along with reaction rate constant are obtained. The activation energy for the generation of MMS from DSA is 37.15 kJ/mol,and the one for the generation of DMS from MMS is 85.80 kJ/mol,indicating the latter one is the rate-determining step for the direct esterification of DSA.

The Colombian Andean Mountains host the headwaters of the main basins of the country. However, the interactions between high-mountain ecosystems and the isotopic composition of water in this region has been poorly studied. Here we present and analyze the first set of stable isotopes data collected in the Central Andes of Colombia. Stable isotopic composition of stream water and precipitation was determined for a period between 2017 and 2018 in the Upper Claro River Basin. The driving factors influencing the spatial and temporal variability of δ 2H, δ 18O and d-excess were identified and compared to daily air temperature and precipitation at seven meteorological stations. A Local Meteoric Water Line was defined as δ²H = 8.13 δ 18O + 12.5, R 2=0.98. δ 2H, δ 18O and d-excess values of precipitation were more negative during the rainy season and changes were more related to precipitation events and amounts than to temperature. An altitude effect of -0.11 ‰ / 100 m and -0.18 ‰ / 100 m was estimated for stream water and precipitation, respectively, where the latter showed a non-linear behavior. The data set was compared to stations of the Global Network of Isotopes in Precipitation (GNIP) database in Colombia and a back-trajectory analysis of air masses was conducted to compare with d-excess. δ 18O weighted means changed with respect to the position of the Central Andes and the altitudinal range 2,100 to 3,100 m a.s.l.. High d-excess can be attributed to moisture recycling enhanced by the local ecosystems and the travel of precipitable water from the Amazon basin across the northern Andes. The results showed a high range of variation due to the differences in elevation, seasonality and atmospheric circulation patterns across the year. The present study contributes to fill the gap of spatial and temporal isotopic composition data in the northern Andes as well as to the implementation of the first “National Network for Isotopes” in Colombia.

Objective: To investigate the effect of size, site and activity of tympanic membrane (TM) perforation on hearing loss (HL) in Aboriginal and Torres Strait Islander (ATSI) children. Design: Observational study Methodology: Children aged 5-18 years who identified as ATSI at 7 Anangu community schools within the APY Lands and Maralinga Lands of South Australia underwent 4 frequency pure-tone audiometry (0.5, 1, 2 and 4kHz) and video-otoscopy (VO). VO data was reviewed by surgeons for a middle ear diagnosis and VO files with TM perforations were then classified by perforation site (AS, AI, PS, PI, A, P, I) and size (<25%, 25–50%, 50–75% or 75–100%). Results: 575 VO files with matching audiological data were obtained. Active perforations (35dBHL; 28-44 IQR) demonstrated greater HL than inactive perforations (31dBHL; 29-39 IQR) p=0.0029. For inactive perforations there was a significant difference between <25% and all larger perforations (p<0.0001) whereas for active perforations the significance changed to between <25% (p<0.0001) and 25-50% (p<0.05) when compared to larger perforations. When perforation site was compared within all size/activity groups, no statistically different findings were identified. In all analyses findings did not change when individual frequencies were compared to 4-frequency pure tone average dBHL. Conclusion: In ATSI children from remote communities HL is greater in ears with larger perforations and active middle ear disease but there was no relationship between perforation site and HL.

Abstract Objective: To explore the role of acquired CFTR dysfunction and inflammatory chemokines in the development of rhinosinusitis in children. Design and setting Twenty-five children who underwent endoscopic sinus surgery for acute and chronic rhinosinusitis in the Department of Otolaryngology Head and Neck Surgery at our hospital from January 2021 to December 2021 were included. Whole blood, mucosa and polyp tissues of all children were collected for study. Main outcome measures： The CFTR gene was detected by using Full-length second-generation sequencing. The expression of CFTR mRNA was measured by qRT-PCR, and the expression of inflammatory chemokines was measured by CBA. Results： There were 17 cases in the CRS group and 8 cases in the ABRS group. The expression of CFTR mRNA in the mucosa of the ABRS group was lower than that of the CRS group, and the expression of IL-6 and IL-8 in the mucosa of the ABRS group was significantly higher than that of the CRS group. IL-6, IL-8 and MCP-1 were upregulated in polyps. Conclusion: The dysfunction of acquired CFTR and the role of neutrophil chemotactic factor are more obvious in ABRS, and may play a role in the occurrence and development of CRS polyps.

The vegetation cover of the Loess Plateau in China has been markedly restored through implementation of land management measures and ecological engineering. Previous studies of the effects of vegetation restoration on climate focused primarily on carbon sequestration and ignored biogeophysical effects. In this study, we used remote sensing data from 2001–2017 to quantify land cover change, vegetation restoration, and the corresponding differences in radiative forcing (RF). Furthermore, we derived the carbon dioxide (CO 2) equivalent for vegetation restoration from the 100-year global warming potential (GWP). Our results showed that cropland and forestland areas increased continuously from 2001–2017, with positive average rates of 13.76% and 33.24% per year, respectively. Vegetation greenness (expressed as the Normalized Difference Vegetation Index) also showed an increasing trend, indicating a gradual increase in vegetation activity. Conversely, surface albedo showed a decreasing trend closely related to the vegetation greenness increase. During the whole study period, both RF and GWP showed an increasing trend, with average annual rates of 0.13 W/m 2/yr and 0.19 kgCO 2/m 2/yr, respectively. The global average RF was 1.58 W/m 2 and the global average GWP was 3.7 kgCO 2/m 2. Vegetation restoration on the Loess Plateau induced an overall decrease in surface albedo, thus an increase in surface energy, or warming effect, equivalent to an emission of 3.7 kgCO 2/m 2. We concluded that it is essential to consider the biogeophysical effect of vegetation restoration when quantifying the global effect of vegetation on climate.

Objectives To describe and document the anatomical and histological architecture of the vaginal outlet wall. Design A prospective observational case series study. Setting International centers. Population Twelve fresh human female cadavers. Methods Female corpses were subjected to stratum-by-stratum, macro-, and micro-anatomical dissections in sagittal, transverse, and coronal planes. Multiple excisional biopsies were obtained from the vaginal outlet wall at 12, 3, 6, and 9 o’clock locations for histological examination. Digital photograms documented the anatomical and histological features. Primary Outcome measures gross, topographic anatomy and characteristic histologic features of the vaginal outlet wall. Results The vaginal outlet wall (VOW) was positioned in the vertical orientation and fused with horizontally located the vaginal wall at the hymeneal plate level. The hymeneal membrane and ring were not attached directly to the vaginal wall. VOW has three identifiable anatomical-histological layers a) the hymeneal membrane, b) the hymeneal ring (cartilage) with different anatomy and histology than the vaginal wall, and c) the hymeneal plate (the deep level of VOW), which connects to the vaginal wall. Conclusions The vaginal outlet wall is an anatomical structure consisting of the hymeneal membrane, hymeneal ring (cartilage), and hymeneal plate. This structure is in vertical topographic orientation. Anatomically and histologically, it differs from the vaginal wall, which fuses with the deep layer of the hymeneal plate.

A 42-year-old female, treated with isoniazid, rifampicin, pyrazinamide and ethambutol for multifocal tuberculosis, developed, forty days later, hyperthermia, facial edema, cervical lymphadenopathy and generalized exanthema. Biological test results revealed eosinophilia, atypical lymphocytes, thrombocytopenia and liver injury. DRESS was suspected, and four antituberculosis drugs (ATD) were withdrawn. As patch tests for the four ATD showed negative results, we decided to reintroduce pyrazinamide, ethambutol and rifampicin separately with a three-day interval. Pyrazinamide and rifampicin were tolerated by the patient. However, six hours after receiving ethambutol, she developed fever and generalized rash, with no biological abnormalities, which resolved two days later. Since ethambutol was claimed to be the culprit drug, isoniazid was added, and 10 hours later, the patient developed fever, facial edema, generalized rash, eosinophilia and liver injury. This clinical and biological pattern resolved two weeks later. This report suggests a hypersensitivity relapse to ethambutol after isoniazid-induced DRESS in patients treated with first-line ATD.

OBJECTIVES: To examine the distribution of Gardnerella genomospecies in a Chinese cohort, investigate its relationship with BV and elucidate the potential function of L. iners in predicting the clinical outcome of BV. POPULATION: 130 non-pregnant BV patients and 41 healthy women from Peking University First Hospital. MAIN OUTCOME MEASURES: Patients visited clinic again after antibiotic treatment and divided into three groups according to Nugent score. METHODS: Vaginal swabs used for microscopic examination, 16SrRNA sequencing, bacterial culture and isolation and Gardnerella vaginalis, Atopobium vaginae and Lactobacillus iners isolates used for competition tests. RESULTS: Seven Gardnerella genomospecies were presented in all participants and relative abundance of all detected genomospecies were higher in BV patients (p<0.05). Cured patients possessed higher GS03 compared to other groups (p=0.005, 0.0337). L. iners was significantly higher in cured patients compared to other groups (p=0.0021, p<0.0001) and it was able to inhibit the growth of Gardnerella vaginalis and Atopobium vaginae. CONCLUSION: Seven Gardnerella genomospecies can be detected in Chinese BV patients, but its distribution is not related to BV. Cured patients possess higher relative abundance of L. iners is higher and L. iners can inhibit growth Gardnerella vaginalis and Atopobium vaginae. L. iners might become a predictive indicator of clinical outcomes of BV patients and its antimicrobial function might be beneficial to BV patients. FUNDING: National Key Research and Development Program of China (2021YFC2301000) and the National Natural Science Foundation of China (81971342). Key words: bacterial vaginosis, Gardnerella genomospecies, Lactobacillus iners, 16SrRNA sequencing, antimicrobial activity.

Influenza A and B are the most common causes of respiratory tract-restricted acute viral disease. Each year, it is estimated that around 16% of children aged 5 to 17 are hospitalized. Baloxavir Marboxil has the potential to be an innovative alternative to the existing standard of therapy for these individuals.

To date, there is no established treatment of facial numbness or dysaesthesia of unspecified causes. Herein, we report a case of unexplained facial numbness and confirmed hypaesthesia that achieved clinical response to stellate ganglion blockade (SGB). SGB might be an effective treatment of psychological-stress-related facial numbness of unknown origin.

Renal Inflammatory myofibroblastic tumor (IMT) is very rare and lacks characteristic clinical manifestation and radiographic features. This is a case discussing the radiologic and pathologic findings of a renal IMT in a 6-year-old boy who underwent radical nephrectomy for a right renal mass that was misdiagnosed as Wilms’ tumor.

Quercus section Cyclobalanopsis is a dominant woody lineage in East Asian evergreen broadleaved forests. Regardless of its significant ecological and economic importance, little was known on the genome of this unique oak group. Quercus glauca, also known as ring-cup oak, is the most widespread tree in section Cyclobalanopsis. In this study, a high-quality haplotype-resolved reference genome of Q. glauca was generated from PacBio CCS and Hi-C reads. The genome size, contig N50, and scaffold N50 of Q. glauca are 902.8 Mb, 7.6 Mb, and 69.3 Mb, respectively, for haplotype1, and 913.2 Mb, 7.2 Mb, and 71.5 Mb, respectively, for haplotype2. The LTR Assembly Index of the Q. glauca genome was more than 22. A total of 37,460 and 38,312 protein-coding genes were predicted in haplotype1 and haplotype2, respectively. Homologous chromosomes of Q. glauca had excellent gene pair collinearity. A total of 905 R-genes were detected in Q. glauca. The divergence between Q. glauca and Q. suber occurred about 44.6 million years ago, agreeable to the earliest fossil records of section Cyclobalanopsis found in East Asia. The global climate change before the late Miocene and local climate change since the Pliocene were the main causes of the effective population size change of Q. glauca. The high-quality genome assembly of the most widespread species of section Cyclobalanopsis can provide essential genomic resources for unraveling the evolution mystery of the main oak lineages, and to promote the application of genomic data on the interspecific introgression, local adaptation, and speciation studies of oaks.

Agriculture has long been regarded as the backbone of Sri Lanka, contributing to its’ economy for over thousands of years. However, with recent technological advancements many of the indigenous practices with regard to cultivation have been neglected or forgotten. The use of toxic chemicals in agricultural practices has led to a host of deleterious effects on humans as well as the environment. This paper looks into how ancient Sri Lankans utilized a native tree, Madhuca longifolia (Mee), in paddy cultivation for various purposes including the prevention of soil erosion, water conservation, soil enrichment and pest control measures. Although our ancestors lacked the scientific knowledge to justify their practice, the basis for these are now understood in the scientific community. Therefore, a return to these practices may be worthwhile in terms of their beneficial influence on agriculture, environment and human health and wellbeing. Keywords: Agriculture; Pest control; Soil erosion; Conservation of natural resources

1. Passive Acoustic Monitoring is emerging as a solution for monitoring species and environmental change over large spatial and temporal scales. However, drawing rigorous conclusions based on acoustic recordings is challenging, as there is no consensus over which approaches and indices are best suited for characterizing marine acoustic environments. 2. We present an alternative to the use of ecoacoustic indices and describe the application of multiple machine learning techniques to the analysis of a large PAM dataset. We combine pre-trained acoustic classification models, dimensionality reduction, and random forest algorithms to demonstrate how machine-learned acoustic features capture different aspects of the marine environment. We processed two PAM databases and conducted 13 trials showing how acoustic features can be used to: i) discriminate between the vocalizations of marine mammals, beginning with high-level taxonomic groups, and extending to detecting differences between conspecifics belonging to distinct populations; ii) discriminating amongst different marine environments; and iii) detecting and monitoring anthropogenic and biological sound sources. 3. Acoustic features and their UMAP projections exhibited good performance in the classification of marine mammal vocalizations. Most of the taxonomic levels investigated here could be classified using the UMAP projections, apart from species that were underrepresented. Both anthropogenic (ships and airguns) and biological (humpback whales) sound sources could also be identified in field recordings. 4. We argue that acoustic feature extraction, visualization, and analysis allows the retention of most of the environmental information contained in PAM recordings, overcoming the limitations encountered when using ecoacoustics indices. Acoustic features are universal, permitting comparisons of results collected from multiple environments. Our approach can be used to simultaneously investigate the macro and micro characteristics of marine soundscapes, with a more objective method and with far less human effort.

This present case report will help all healthcare professionals aware and vigilant about the adverse drug reaction caused by drug combination glimipride, voglibose, metformin, and clomiphene citrate.

Background: The hemodynamics of most prosthetic valves are often inferior to that of the normal native valve, and a significant proportion of patients undergoing surgical (SAVR) or transcatheter aortic valve replacement (TAVR) have high residual transaortic pressure gradients due to prosthesis–patient mismatch (PPM). Since the experience with TAVR has increased and long-term outcomes are reported, a close look at the PPM literature is required in light of new evidence. Methods: For this review, we searched the Embase, Medline, and Cochrane databases from 2000 to 2022. Articles reporting PPM as an outcome following aortic valve replacements were identified and reviewed. Results: The impact of PPM on clinical outcomes aortic valve replacement has not been clear since multiple studies failed to report PPM incidence. However, the PPM after SAVR vary greater than after TAVR, ranging from 8% to almost 80% in SAVR and from 24%-35% in TAVR. Incidence of severe PPM following redo SAVR is ranging from 2 to 9% and following valve-in-valve TAVR is from 14 to 33%, however, while PPM is higher in valve-in-valve TAVR, patients had better survival rates. Conclusions: The gap between valve performance and clinical outcomes in TAVR and SAVR could be reduced by carefully selecting patients for either treatment option. Understanding predictors of PPM can add to the safety, effectiveness, and increased survival benefit of both TAVR and SAVR.

The Vasoactive-Inotropic Score at 48 hours is a good surrogate marker for adverse postoperative events in pediatric patients undergoing cardiac surgery with cardiopulmonary bypass and is limited by its ability to delineate the underlying cause for an unfavourable clinical course. Thus, other predictors such as the Technical Performance Score are likely to highlight the underlying cause and can be used to improve outcomes. However, patients with a high postoperative VIS score at 48 hours may benefit from closer longer-term follow for outcomes such as late survival, functional class, and need for reoperation.

Background: The most worrisome complications in patients supported by left ventricular assist device (LVAD) are pump thrombosis, embolism, and bleeding. The actual rate of these events in patients with sickle-cell disease (SCD) has not well investigated. The aim of our study is to evaluate the outcomes of LVAD implantation in patients with sickle-cell hemoglobinopathy at our institution. Methods: This retrospective, observational, single-center study was conducted on patients with sickle-cell trait (SCT), who underwent LVAD implantation using the HeartMate3 LVAD. Results: LVAD devices were implanted in four patients with SCT. All procedures were performed successfully. All patients had uneventful post-implant course. Overall, the mean follow-up time was 25 months (range 21-28 months) and showed an unremarkable post-implant course. There was a significant improvement in hematological markers over the follow-up period. Conclusions: Despite the limited numbers of patients enrolled in this study, our findings indicate that LVAD surgery is safe in SCD patients and offers remarkable clinical improvement. Further studies are needed to provide more evidence regarding this type of patients undergoing LVAD implantation.

Sulforaphane is the plant active substance with the best anticancer effect and antioxidant found in vegetables. In this paper, the DFT-B3LYP/cc-pVTZ theoretical level was used to optimize the molecular structure of sulforaphane in gas phase, the DLPNO-CCSD(T)/cc-pVTZ is used to calculate the ground state, and the first 30 excited states of molecule in methanol were calculated by TD-DFT-B3LYP/cc-pVTZ level of theory in SMD solvent model. To analy the excited states of sulforaphane molecule by calculate UV spectrum and hole-electron. Finally, we predicted the active sites of sulforaphane molecule by calculating frontier orbital and fukui function. The results show that: In the UV spectrum, the absorption peaks at 204.4602 and 336.5590nm are the absorption bands of hetero atomic groups of conjugate molecules, which are generated by n-π* transition and belong to R absorption band. According to hole-electron analysis, S0→S18 is the local excitation, and S0→S7, S0→S25 and S0→S29 are the charge transfer excitation. In addition, the O and S atoms on sulfuryl group of sulforaphane are the site of electrophilic reaction; the C and S atoms on the cyanide group are sites of nucleophilic reaction. This study provides a theoretical basis for better understanding the antioxidant and anticancer mechanisms of sulforaphane.

Objectives: We present a case series of patients with granulomatous myocarditis presenting as atrial arrhythmias accompanied by lymphadenopathy. Background: Atrial myocarditis (AM) may be the cause of atrial arrhythmias in patients without risk factors for atrial fibrillation. (AF). Methods: Patients with atrial arrhythmias without traditional risk factors for AF underwent 18F Fluorodeoxyglucose positron emission tomography (18F FDG PET). We performed biopsy of either the myocardium or draining lymph nodes in patients with atrial uptake of 18F FDG PET. We found evidence of AM in 15 patients. Results: The mean age of the patients was 43.33±12.59 years with a male predominance (73.3%). The left ventricular ejection fraction (LVEF) at presentation was 48.07±12.29% and the left atrial volume was 37.6±10.64 ml. All patients had AF at presentation, atrial flutter was noted in 4 patients (26.7%) and 2 patients (13.3%) had atrioventricular nodal reentrant tachycardia (AVNRT). 18F FDG PET uptake was noted in the atria in all patients and in the ventricles in 3 patients (20%). Cardiac sarcoidosis was the diagnosis in 12 patients (80%) while 3 patients (20%) had evidence of tuberculosis. The mean CHA2DS2 Vasc score of the patients was 1.06±0.93. Four patients (26.7%) presented with ischemic stroke. All patients were treated with disease specific therapy (immunosuppression or anti-tuberculosis therapy) in addition to standard anti-arrhythmic medications. Over a mean follow up of 30.53± 13 months we observed a significant improvement in clinical status commensurate with a decline in atrial uptake. There was a non-significant improvement in LVEF to 56±12.07% with disease specific therapy. (p=0.0853) Conclusions: Atrial arrhythmias with granulomatous lymphadenopathy may be a presenting feature of Atrial myocarditis. The risk of stroke seems to be high in these individuals. This syndrome should be suspected in young individuals presenting with atrial arrhythmias and stroke without conventional risk factors.