bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of screw configuration and processing parameters on glass fiber residual length and properties of glass fiber reinforced polybutylene terephthalate composites
Authors: Ren Jifu , Zhou Zhenchi , Zhao Bo , Yu Xingxing 
Published: March 2023

AbstractGlass fiber reinforced polybutylene terephthalate (GF‐PBT) composite is widely applied in automobile, electronic and electrical appliances, industrial machinery due to excellent toughness, mechanical properties, heat resistance, solvent resistance and processing fluidity. However, consistent with other glass fiber reinforced composites, glass fibers are easy to fractured and hard to be dispersed during processing, limiting its improvement of material performance. A series of studies on the factors, such as screw configuration, processing parameters, were carried out through eight different screw configurations with five different screw elements in twin‐screw extruder (TSE) to evaluate the effects caused by processing stress, screw speed, mixing section temperature, feeding rate and processing length in GF‐PBT composite. The rotation number Nt was innovatively introduced and a novel exponential model was established to successfully predict the glass fiber residual length in the PBT system. The average glass fiber residual length at different axial positions of the screw during the processing was evaluated through the emergency stop experiment and the main reason for the glass fiber fracture was revealed. The results showed that the screw configuration affects the mechanical properties through the dispersion of glass fiber bundle, the residual length of glass fiber and the uniformity of length distribution, while the process parameters have little effect on the tensile strength and elongation at break, and have a greater impact on the notch impact strength, bending strength and bending modulus in PBT system.
Enhanced the dielectric and piezoelectric properties of polyacrylonitrile piezoelectric composite fibers filled with ionic liquids
Authors: Shi Qisong , He Shifeng , He Yongqing , Wu Yibo , Liu Ruofan 
Published: March 2023

AbstractHere, we demonstrate the design and application of a multifunctional piezoelectric composite nanofiber membrane. In this study, the most widely used electrospinning method, by adding a small amount of 1‐allyl‐3‐butylimidazolium tetrafluoroborate ionic liquids and ferric chloride hexahydrate (FeCl3·6H2O) to regulate the structure and properties of polyacrylonitrile (PAN), the mechanical properties, piezoelectric properties, dielectric properties, and ferroelectric properties of composite nanofibers were improved. The results show that the piezoelectric properties of PAN composite fibers are greatly improved under the action of dual fillers. At 103 Hz, the dielectric constant of the PAN composite fiber is as high as 8.24, which is three times that of the pure PAN fiber. The sensor made from the composite nanofibers exhibits excellent sensitivity and high saturation polarization. At low pressure (<1 kPa), the sensitivity of the composite fiber is as high as 0.51 kPa. When we tap the sensor with our finger, the PAN composite fiber produces high piezoelectric output (5.7 V). The results show that the composite nanofibers have great potential in energy storage devices and flexible piezoelectric sensors, among other fields.
Community mental health, psychoanalysis, and freedom: The case of Palestine
Authors: Jabr Samah , Berger Elizabeth 
Published: March 2023

AbstractThe authors describe community mental health in Palestine from several vantage points: Palestine's historical and current context of military/political violence under Israeli occupation, its health care system and system of mental health care, and the status of its mental health staffing and training. Vignettes illustrate characteristic challenges and opportunities for Palestine within the domain of mental health. The roles of cognitive behavioral therapy and psychoanalytic thinking are discussed in terms of current practice, with an eye toward policy planning for a fully integrated model of health care delivery. The authors argue that the values of justice, freedom, and human rights are fundamental to well‐being, and that the theory and practice of community mental health must support active resistance to violation of these principles.
Constraining the uncertainty of urbanization effect on surface air temperature change over the Beijing–Tianjin–Hebei region in China
Authors: He Yuting , Feng Jinming , Wang Jun , Cao Lijuan 
Published: March 2023

AbstractQuantitative assessment of urbanization effect on surface air temperature (SAT) change provides crucial basis for formal detection and attribution analyses of climate change. However, debates about urbanization‐related warming bias in documented regional SAT trend still persist, mainly due to different determination of rural stations. Here the urbanization effect on SAT change over the Beijing–Tianjin–Hebei region in China during 1980–2019 is estimated through three kinds of ways (i.e., comparisons between urban and rural stations [arithmetically station‐averaged], urban‐dominated and rural‐dominated patches [patch‐weighted mean], and realistic urban and rural areas [area‐weighted mean]). The last method explicitly takes urban and rural land cover fractions into account when calculating urban/rural and regional mean SAT trends. Urbanization‐induced warming in the annual mean SAT change of urban stations (areas) through the three ways are estimated as 0.159°C, 0.195°C, and 0.138°C per decade, respectively. And urbanization effect on regional averaged annual mean SAT calculated by patch‐weighted and area‐weighted methods are 0.113°C and 0.050°C per decade, respectively, which account for 33.8% and 14.8% of the total regional warming. The urbanization effect on observed SAT change estimated by considering realistic urban/rural land cover proportions is much lower than traditional station‐unweighted way.
Novel electrodes and gate dielectrics for field‐effect transistors based on two‐dimensional materials
Authors: Song Intek 
Published: March 2023

AbstractTwo‐dimensional (2D) materials are atomically thin materials that show quantum confinement effect. They have been studied as promising materials for field‐effect transistors (FETs). The fabrication of an FET mainly concerns how to deposit metal electrodes and dielectrics onto the 2D material channel. And conventional fabrication processes are not optimized for novel applications of 2D FETs. This review aims to introduce recent studies regarding novel electrodes and dielectrics for 2D FETs. The devices made by these approaches show comparable performance to conventional FETs. And they feature new applications and easy fabrication. This review covers the topics in two sections: evaporation‐free electrodes and nonoxide dielectrics. The former covers electrodes prepared without direct deposition of metals using evaporators or sputters. The latter encompasses alternatives to oxide dielectrics. These topics would be beneficial to realize the intrinsic properties of 2D materials and to assist fundamental research with prototyping FETs on a tabletop.
G‐quadruplex‐enhanced circular single‐stranded DNA (G4‐CSSD) adsorption of miRNA to inhibit colon cancer progression
Authors: Wu Haidong , Zhong Weilong , Zhang Ronghua , Ding Yuping , Qu Chunhua , Lai Keguan , Pang Zheng , Yin Shan , Zhang Guangling , Chen Shuang 
Published: March 2023

AbstractBackgroundChromosomal heterogeneity leads to the abnormal expression and mutation of tumor‐specific genes. Drugs targeting oncogenes have been extensively developed. However, given the random mutation of tumor suppressor genes, the development of its targeted drugs is difficult.MethodsOur early research revealed that artificial circular single‐stranded DNA (CSSD) can restore multiple tumor suppressor genes to inhibit tumor malignant progression by adsorbing miRNA. Here, we improved CSSD to a fully closed single‐stranded DNA with G quadruplex DNA secondary structure (G4‐CSSD), which made G4‐CSSD with higher acquisition rate and decreased degradation. The Cancer Genome Atlas (TCGA) and Human Protein Atlas database were used to predict tumour suppressor genes in colon cancer. Cellular and animal experiments were performed to validate the role of G4‐CSSD in cancer cell progression.ResultsIn colon cancer, we observed the simultaneous low expressions of chloride channel accessory 1 (CLCA1), UDP‐GlcNAc:betaGal beta‐1,3‐N‐acetylglucosaminyltransferase 6 (B3GNT6) and UDP glucuronosyltransferase family 2 member A3 (UGT2A3), which indicated an favourable prognosis. After repressing miR‐590‐3p with G4‐CSSD590, the upregulation of CLCA1, B3GNT6 and UGT2A3 inhibited the proliferation and metastasis of colon cancer cells.ConclusionsThis study may provide basis for new treatment methods for colon cancer by restoration of tumor suppressor genes.
Fat grafts enriched with ex‐vivo expanded adipose stem cells improve hyperpigmentation of face
Authors: Bashir Afzaal , Bashir Muhammad M. , Afzaal Sunaina , Ahmad Fridoon J. , Choudhery Mahmood S. 
Published: March 2023

AbstractFacial contour deformities associated with pigmentary changes are of major concern for plastic surgeons being difficult to treat. No definite ideal treatment option is available to address simultaneously both the contour defects as well as related hyperpigmentation. The aim of the current study is to compare long‐term effects of conventional adipose tissue grafting and ex‐vivo expanded ASC‐enriched adipose tissue grafting for the treatment of contour deformities related pigmentary changes on the face. In this study, 80 patients of contour deformities of face with hyperpigmentation were recruited after informed consent. Two techniques, that is, conventional fat grafting (C‐FG) and fat grafts enriched with expanded adipose stem cells (FG‐ASCs) were used to address the pigmentation. Both techniques were explained to patients and enrolled patients were divided into two groups, that is, C‐FG and FG‐ASCs as per patients' choice and satisfaction. Patients of the FG‐ASCs group were treated with FG‐ASCs while patients of C‐FGs group were treated with C‐FG (without expanded ASCs). Patients were followed for 12 months and improvement in face pigmentation was assessed clinically as well as measured objectively. Patients' satisfaction was also documented as highly satisfied, satisfied, and unsatisfied. This clinical trial was registered atwww.clinicaltrials.govwith ID:NTC03564808. Mean age of patients was 24.42 (±4.49), 66 patients were females. Forehead was involved in 61.20% cases, cheek in 21.20% cases, chin in 11.20% cases, and nose in 6.20% cases. In GF‐ASCs group, the integrated color density was decreased (1.08 × 106 ± 4.64 × 105) as compared with C‐FG group (2.80 × 105 ± 1.69 × 105). Patients treated with fat grafts enriched with expanded ASCs were significantly more satisfied as compared with patients treated with C‐FG only. In conclusion, ASC‐enriched autologous fat grafting is preferred option for improving the contour deformities related increased pigmentation of face skin.
Benzopyrano‐Fused Phenanthridine‐Based Columnar Mesogens: Synthesis, Self‐organization and Charge‐Transport Properties
Authors: S. Vanishree Bhat , Vadivel Marichandran , Singh Dharmendra Pratap , Raghunathan V. A. , Roy Arun , Kumar Sandeep 
Published: March 2023

AbstractColumnar mesogens constitute a fascinating class of supramolecular nano‐architectures owing to the exceptional properties induced by their self‐assembling behavior. Extending the π‐conjugated core in such systems by incorporating heteroatoms extensively influences their mesomorphic, photophysical properties, etc., presenting them as potential candidates for optoelectronic applications. In the present work, a series of novel nitrogen and oxygen‐incorporated chromenonaphthophenanthridine‐based elliptical dimers have been synthesized through tandem Pictet‐Spengler cyclization followed by ipso‐aromatic substitution in one‐pot. Mesophase characterization has been carried out by employing POM, DSC, and X‐ray diffraction studies. Photophysical properties were investigated using UV‐vis and emission spectroscopy. Furthermore, the charge transport properties were analyzed by time‐of‐flight measurements, and the observed ambipolar mobilities were found to be of the order of 10−3 cm2 V−1 s−1. The high solubility, excellent thermal stability, self‐organizing properties, and ambipolar charge transport characteristics make them promising candidates for applications in organic electronics.
Diazotypie – Bildgebung mit Diazoniumsalzen
Authors: Ducci Matthias 
Published: March 2023

ZusammenfassungPeter Griess stellte 1858 die ersten Diazoverbindungen her. An der Strukturaufklärung dieser neuen Verbindungsklasse war August Kekulé maßgeblich beteiligt. Etwa 1886 wurde die Lichtempfindlichkeit von Diazoverbindungen entdeckt. Dies wurde zur Entwicklung der Diazotypie (ein silberfreies Kopierverfahren, bei dem Diazofarbstoffe entstehen) ausgenutzt. Anschließend wird ein Vorschlag gemacht, wie die Diazotypie in den Chemieunterricht implementiert werden kann.
Survival of patients with orbital and eyelid rhabdomyosarcoma treated on Children's Oncology Group studies from 1997 to 2013: A report from the Children's Oncology Group
Authors: Metts Jonathan , Xue Wei , Gao Zhengya , Ermoian Ralph , Bradley Julie A. , Arnold Michael A. , Dasgupta Roshni , Venkatramani Rajkumar , Walterhouse David 
Published: March 2023

AbstractBackgroundOrbital rhabdomyosarcoma (ORMS) commonly presents as low‐risk disease (stage 1, group I–III, embryonal RMS) with excellent outcome. Long‐term follow‐up of patients with low‐risk ORMS and outcomes of less common subgroups of ORMS treated on recent Children's Oncology Group (COG) trials have not been reported.MethodsPatients with ORMS enrolled on COG trials from 1997 to 2013 were identified. Demographic information and disease characteristics were collected. Outcomes were determined for the following subgroups: 1) low‐risk ORMS, 2) resected (group I/II) low‐risk ORMS, 3) non–low‐risk ORMS, and 4) recurrent ORMS. Event‐free survival (EFS) and overall survival (OS) were estimated using the Kaplan–Meier method.ResultsThe authors identified 218 patients with ORMS. Most tumors were embryonal/botryoid (n = 169; 77.5%), <5 cm (n = 213; 97.7%), group III (n = 170; 78.0%), and without lymph node involvement (N0; n = 215; 98.6%). For 192 patients with low‐risk ORMS, the 10‐year EFS and OS rates were 85.5% (95% confidence interval [CI], 77.0%–94.0%) and 95.6% (95% CI, 90.8%–100.0%), respectively. Those with group I/II low‐risk ORMS (n = 5 in group I; n = 39 in group IIA) had 10‐year EFS and OS rates of 88.0% (95% CI, 72.6%–100.0%) and 97.6% (95% CI, 90.0%–100.0%), respectively. Twenty‐six patients with non–low‐risk ORMS had 5‐year EFS and OS rates of 88.5% (95% CI, 75.6%–100.0%) and 95.8% (95% CI, 87.7%–100.0%), respectively. For patients with recurrent ORMS, the 10‐year OS rate from the time of recurrence was 69.4% (95% CI, 50.0%–88.8%).ConclusionsPatients with ORMS had favorable long‐term survival outcomes on COG studies from 1997 to 2013, including those who had both low‐risk and non–low‐risk disease. A significant proportion of patients with recurrent ORMS may achieve long‐term survival.
Dendrite‐free and Stable Zn‐ion Energy Storage Devices Enabled by a Three‐dimensional Sn−Cu Foam Hosted Zn Anode
Authors: Liang Yiqi , Wang Jun , Tian Zhidong , Shang Kezheng , Hu Xiang , Yu Jiaqi , Cai Pingwei , Liu Yangjie , Yuan Jun , Ding Yichun , Wen Zhenhai 
Published: March 2023

AbstractZn ion energy storage devices have received widespread attention because of their high safety, environmental friendliness, low cost, and high energy density. However, Zn metal anodes usually suffer from disadvantages such as dendrite growth, low coulombic efficiency, and volume expansion during plating/stripping, which severely hampers the practical applications. Here, we construct 3D Zn frameworks by exploring different conductive hosts and modify 3D hosts by plating Sn to suppress Zn dendrites and side reactions. The electrode which optimized by electroplating Zn after chemically plating Sn on Cu foam (Sn−Cu foam@Zn) exhibits stable polarization voltage distribution and almost 100% coulombic efficiency over 200 cycles of Zn plating/stripping. Furthermore, when pairing with V2O5 cathode, the full cell showed fast reaction kinetics and a capacity of 113 mAh g−1 after 1000 cycles at a current density of 1 A g−1, which is 90.4% of the initial capacity. This work provides a new strategy for the development of high‐performance Zn anodes.
The significance of upfront autologous stem cell transplantation for high‐intermediate/high‐risk stage IV diffuse large B‐cell lymphoma
Authors: Koviazin Aleksei K. , Filatova Larisa V. , Zyuzgin Ilia S. , Artemyeva Anna S. , Poliatskin Ilia L. , Burda Darya S. , Volchenkov Stanislav A. , Elkhova Svetlana S. , Semiglazova Tatiana Yu. 
Published: March 2023

AbstractBackgroundDiffuse large B‐cell lymphoma (DLBCL) is the most common (30%–35%) type of B‐cell lymphoma. Only about 60% of all newly diagnosed advanced‐stage DLBCL can be completely treated with x6 R‐CHOP. High‐dose chemotherapy (HDCT) followed by autologous hematopoietic stem cell transplantation in the first remission (upfront auto‐HSCT) can serve as an option to improve a prognosis in these patients.AimsThis trial aimed to improve prognosis in DLBCL by upfront auto‐HSCT.Methods and ResultsA group of 105 patients: DLBCL NOS, age 18–65, stage IV, IPI ≥2, CR/PR after x6 R‐CHOP/DA‐EPOCH‐R from 2010 to 2019 at NMRC of Oncology named after N.N.Petrov of MoH of Russia was retrospectively analyzed. The HSCT group included patients with upfront HDCT followed by auto‐HSCT (n = 35). The control group included patients with non‐invasive follow‐up after induction (n = 70). Primary endpoint was progression‐free survival (PFS). Secondary endpoints were overall survival (OS), response rate and relapse rate. The 3‐year OS (p = .013) and 3‐year PFS (p = .033) were significantly higher in the HSCT group. The 3‐year OS was decreased by the occurrence of relapse (p ≤ .001) and weight loss (B‐symptom) (p = .04). DEL was the negative prognostic factor for 3‐year PFS in all patients (p = .001) and control group (p = .001). DA‐EPOCH‐R significantly increased the 3‐year PFS (p = .041).ConclusionUpfront HDCT followed by auto‐HSCT can increase 3‐year OS and PFS and improve prognosis in DLBCL NOS, age 18–65, stage IV, IPI ≥2 patients.
A review on computational methods based automated sign language recognition system for hearing and speech impaired community
Authors: Robert Eunice Jennifer , Duraisamy Hemanth Jude 
Published: March 2023

SummaryThe recent advancements in computer vision and deep learning have led to promising progress in various motion detection and gesture recognition methods. Thriving efforts in the field of sign language recognition (SLR) during recent years led to interaction between humans and computer systems. Contributing a real‐time automated Sign Language recognition system will be a remarkable treasure for hearing and speech‐impaired people that will break the barriers of interaction with the real world. Albeit several research works are accomplished in sign language recognition, there is still a demand for developing a real‐time automated sign language recognition system. Compared to other methodologies, the techniques adopted may have advantages and disadvantages, and they vary from researcher to researcher. There are still some issues with employing these SLR models and procedures regularly, even though numerous research studies have been conducted to determine the most acceptable methods and models for sign language recognition. It gets more expensive and difficult in terms of resources when the developed automated SLR system becomes available as a product. Hence, for the welfare of the hearing and speech‐impaired community, the researchers are still endeavoring way to find a cost‐effective method. This work brings forth the challenges faced by scientists in developing a cost‐effective commercial prototype for the hearing and speech‐impaired community. This paper also explores and analyses various deep learning techniques and methods used in developing a sign language recognition system. The objective behind this work is to identify the best method which produces high accuracy in developing a cost‐effective sign language recognition system aiding communication between signers and non‐signers so that they can be a part of growing technology.
Cluster Amplitudes and Their Interplay with Self‐Consistency in Density Functional Methods
Authors: Jacobson Greta , Marmolejo‐Tejada Juan M. , Mosquera Martín A. 
Published: March 2023

AbstractThe front cover artwork is provided by the Mosquera group at Montana State University, Bozeman. The image shows theoretical elements involved in the density‐functional calculations that are free of spurious fractional charges. Read the full text of the Research Article at 10.1002/cphc.202200592.
The surface conductance of red blood cells and platelets is modulated by the cell membrane potential
Authors: Hughes Michael Pycraft 
Published: March 2023

AbstractDielectrophoretic analysis of cell electrical properties via the Clausius–Mossotti model has been widely used to estimate values of the membrane conductance, membrane capacitance and cytoplasm conductivity of cells. However, although the latter two values produced by this method compare well to those acquired by other electrophysiological methods, the membrane conductance is often substantially larger than that acquired by methods such as patch clamp. In this paper, the electrical properties of red blood cells (RBC) are analysed at two conductivities and following membrane‐altering treatments, to develop a mathematical model of membrane conductance. Results suggest that the RBC “membrane conductance” term is primarily dominated by surface conduction, comprising an element related to medium conductivity augmented by conduction in the electrical double layer, which is in turn altered by the cell membrane potential. Validation of the relationship between membrane potential and membrane conductance was performed using platelets, where a similar relationship was observed. This sheds new light on the origin and significance of the membrane conductance term and explains for the first time phenomena of alterations in the parameter counter to changes in membrane potential or cytoplasm conductivity.