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Abstract A choosing process for the sampling delay in the dye sensitized solar cells I–V characterization method was established. The presented method is based on the stepwise varying bias voltage technique. The analyses were based on the solar cell transient current impact on the cell I–V acquisition. This process presents a method to correctly fix the I–V scan sampling delay concerning the cell settling time to obtain accurate dye sensitized solar cells performance measures. It allows a faster acquisition compared to classical measurement method to avoid the solar cell heating. All tests were performed on a typical TiO2 natural‐dyed solar cell, dedicated to laboratory tests. The cell manufacturing process was also discussed. Measures were operated by a laboratory developed digital acquisition board. The system architecture, as well as its operating algorithm, was presented.

In this work, simulations were performed to optimize the parameters of a lead-free perovskite/silicon tandem solar cell for the improved efficiency and stability of commercial devices. The top sub-cell is based on a lead-free perovskite with a large bandgap of 1.8 eV, an electron transport layer of SnO2/PCBM, which is known for its anti-hysteresis effect, and a hole transport layer of NiO to improve stability, whereas the bottom sub-cell is based on n-type silicon to increase the efficiency of the whole cell. First, the two sub-cells were simulated under standalone conditions for calibration purposes. Then, the current matching condition was obtained by optimizing the thicknesses of the absorber layers of both sub-cells and the doping concentration of the back surface field (BSF) layer of the silicon sub-cell. As a result of this optimization phase, thicknesses of 380 nm and 20 µm for the top and bottom sub-cells, respectively, and a doping concentration of 1022 cm–3 were used in the configuration of the tandem cell, yielding a large open-circuit voltage of 1.76 V and a power conversion efficiency of 24.4% for the whole cell. Finally, the effect of the working temperature was evaluated, and the results reveal that the high performance of lead-free perovskite sub-cells is less affected by an increase in temperature compared to lead-based solar cells, such as those based on CH3NH3PbI3 perovskite.

In this work, two natural dyes extracted from henna and mallow plants with a maximum absorbance at 665 nm were studied and used as sensitizers in the fabrication of dye-sensitized solar cells (DSSCs). Fourier transform infrared (FTIR) spectra of the extract revealed the presence of anchoring groups and coloring constituents. Two different structures were prepared by chemical bath deposition (CBD) using zinc oxide (ZnO) layers to obtain ZnO nanowall (NW) or nanorod (NR) layers employed as a thin film at the photoanode side of the DSSC. The ZnO layers were annealed at different temperatures under various gas sources. Indeed, the forming gas (FG) (N2/H2 95:5) was found to enhance the conductivity by a factor of 103 compared to nitrogen (N2) or oxygen (O2) annealing gas. The NR width varied between 40 and 100 nm and the length from 500 to 1000 nm, depending on the growth time. The obtained NWs had a length of 850 nm. The properties of the developed ZnO NW and NR layers with different thicknesses and their effect on the photovoltaic parameters were studied. An internal coverage of the ZnO NWs was also applied by the deposition of a thin TiO2 layer by reactive sputtering to improve the cell performance. The application of this layer increased the overall short circuit current Jsc by seven times from 2.45 × 10−3 mA/cm2 to 1.70 × 10−2 mA /cm2.

Insulin release is tightly controlled by glucose-stimulated calcium (GSCa) through hitherto equivocal pathways. This study investigates TRPC3, a non-selective cation channel, as a critical regulator of insulin secretion and glucose control. TRPC3's involvement in glucose-stimulated insulin secretion (GSIS) is studied in human and animal islets. TRPC3-dependent in vivo insulin secretion is investigated using pharmacological tools and Trpc3 -/- mice. TRPC3's involvement in islet glucose uptake and GSCa is explored using fluorescent glucose analogue 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) amino]-2-deoxy-D-glucose and calcium imaging. TRPC3 modulation by a small-molecule activator, GSK1702934A, is evaluated in type 2 diabetic mice. TRPC3 is functionally expressed in human and mouse islet beta cells. TRPC3-controlled insulin secretion is K ATP -independent and primarily mediated by diacylglycerol channel regulation of the cytosolic calcium oscillations following glucose stimulation. Conversely, glucose uptake in islets is independent of TRPC3. TRPC3 pharmacologic inhibition and knockout in mice lead to defective insulin secretion and glucose intolerance. Subsequently, TRPC3 activation through targeted small-molecule enhances insulin secretion and alleviates diabetes hallmarks in animals. This study imputes a function for TRPC3 at the onset of GSIS. These insights strengthen one's knowledge of insulin secretion physiology and set forth the TRPC3 channel as an appealing candidate for drug development in the treatment of diabetes., (© 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.)

This study aimed to characterize the relationship between insistence on sameness (IS), executive functioning (EF) and anxiety among individuals with PTEN mutations and individuals with macrocephalic ASD. The sample included 38 individuals with PTEN mutation and ASD diagnosis (PTEN-ASD; M age  = 8.93 years, SD age  = 4.75), 23 with PTEN mutation without ASD (PTEN-no ASD; M age  = 8.94 years; SD age  = 4.85) and 25 with ASD and macrocephaly but with no PTEN mutation (Macro-ASD; M age  = 11.99 years; SD age  = 5.15). The final model accounted for 45.7% of variance in IS, with Set-Shifting EF subdomain as a unique independent predictor (t = 4.12, p < 0.001). This investigation provides the first preliminary evidence for the EF-anxiety-IS interrelationship in individuals with PTEN mutations and with macrocephalic ASD., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.)

This study aimed to further our understanding of restricted and repetitive behaviors (RRB) among individuals with germline pathogenic mutations in PTEN by providing multimethod characterization and comparison of key RRB subdomains across individuals with PTEN mutations with autism spectrum disorder (ASD) (PTEN-ASD), with PTEN mutations without ASD (PTEN-No ASD) and with ASD and macrocephaly but without PTEN mutations (Macro-ASD). Of 86 total research participants, 38 had PTEN-ASD (M age  = 8.93 years, SD age  = 4.75), 25 Macro-ASD (M age  = 11.99 years; SD age  = 5.15), and 23 PTEN-No ASD (M age  = 8.94 years; SD age  = 4.85). The Repetitive Behavior Scale-Revised (RBS-R) and the Autism Diagnostic Interview-Revised (ADI-R) were used as measures of distinct RRB domains. There were significant group differences in the RBS-R repetitive motor behaviors (RMB; F = 4.52, p = 0.014, ω 2  = 0.08), insistence on sameness (IS; F = 4.11, p = 0.02, ω 2  = 0.05), and circumscribed interests (CI; F = 7.80, p = 0.001, ω 2  = 0.14) scales. Post hoc comparisons showed that the PTEN-No ASD group had significantly lower RMB, IS, and CI scores compared to both PTEN-ASD and Macro-ASD groups. Importantly, PTEN-No ASD group still showed elevated RRB levels. Furthermore, there was a portion of individuals in PTEN-No ASD group whose Full-Scale Intelligence Quotient (FSIQ) was >70 that did not show floor level scores in the RMB domain. After adjusting for age and FSIQ scores, group differences were no longer statistically significant. RMB, IS, and CI domains showed distinct association patterns with sex, age, and FSIQ. This investigation provides the largest and most comprehensive characterization of distinct RRB domains in individuals with PTEN mutations to date. Despite the limitations, our findings have important assessment and treatment implications., (© 2021 Wiley Periodicals LLC.)

Germline heterozygous PTEN mutations have been associated with high prevalence of autism spectrum disorder (ASD) and elevated rates and severity of broadly defined behavioral problems. However, limited progress has been made toward understanding whether PTEN mutation is associated with specific psychiatric co-morbidity profiles when compared to idiopathic ASD. The current study aimed to utilize a cross-measure approach to compare concurrent psychiatric characteristics across children and adolescents with PTEN mutation with ( PTEN -ASD; n = 38) and without ASD ( PTEN -No ASD; n = 23), and ASD with macrocephaly but no PTEN mutation (macro-ASD; n = 25) using the Child Behavior Checklist (CBCL) and the Aberrant Behavior Checklist (ABC). There were significant group effects for the CBCL Internalizing and Externalizing broad symptom score, the majority of specific CBCL syndrome scores, and all ABC subscale scores. Post-hoc comparisons revealed greater behavioral symptoms in the ASD groups ( PTEN -ASD and macro-ASD) compared to the PTEN -no ASD group on nearly all subtest scores examined. There were no statistically significant differences between the PTEN -ASD and macro-ASD groups; however, there was a trend for the macro-ASD group showing higher levels of aggressive behaviors. Our findings provide evidence of specific behavior profiles across PTEN -No ASD, PTEN -ASD, and macro-ASD groups and highlight the importance of early identification of behavioral vulnerabilities in individuals with PTEN mutations in order to provide access to appropriate evidence-based interventions., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Steele, Uljarević, Rached, Frazier, Phillips, Libove, Busch, Klaas, Martinez-Agosto, Srivastava, Eng, Sahin and Hardan.)

Abstract: COVID-19 hit the world amidst an unprecedented suicide epidemic in this century. As the world focuses on limiting the spread of the virus and prioritizing acutely medically ill patients, containment measures are not without mental health consequences. With rising anxiety and depression, risk of suicide-acutely and in the aftermath of the pandemic-also rises. This article aims to shed light on this major public health problem and better understand what factors may create or exacerbate psychiatric symptoms and suicide. We review suicide data predating the pandemic and examine impact of previous epidemics on suicide rates. We then focus on the current pandemic's impacts and the world's response to COVID-19. We examine how these may lead to increased suicide rates, focusing on the US population. Finally, we offer suggestions on mitigating interventions to curb the impending rise in suicide and the resultant increased burden on an already stretched health care system., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

Many biomarkers indicate prognosis in chronic lymphocytic leukemia; such as fluorescence in situ hybridization testing: 17p or 11q deletions have a worse prognosis than trisomy 12, 13q deletion or normal result, or the mutational status of the immunoglobulin heavy chain (IGHV): unmutated IGHV have a worse prognosis than mutated IGHV. Recently, many gene mutations ( TP53 , NOTCH1  etc.,) have been linked to a worse prognosis. With the new era of high-throughput sequencing, it has become easier to study gene mutations and their implication in predicting prognosis. In this review, we aim to review all the studies that performed whole-exome sequencing or whole-genome sequencing on chronic lymphocytic leukemia cells and explore the implication of various genes in disease prognosis.

Driving molecular mutations such as rearrangement of ALK and EGFR mutation is present in 5-10% of non-small-cell lung cancer. Tyrosine kinase inhibitors have shown good efficacy and thus become the standard of care. However, tumors have developed several resistance mechanisms against tyrosine kinase inhibitors, including transformation to small-cell lung carcinoma (SCLC). Transformation to SCLC after administration of anti-EGFR in EGFR-mutated adenocarcinoma has been well documented. Similarly, it appears that the same transformation happens in ALK-rearranged adenocarcinoma after the use of anti-ALK. In fact, to date eight cases have been reported in the literature. We aimed in this paper to focus on the characteristics, prognosis and treatment of these transformed SCLC.