bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sensitivity of the linear and nonlinear optical properties to electric field and doping density in CdSe/MgSe single quantum well
Authors: Jbeli Anouar 
Published: January 2024

Abstract
In the present paper, we have explored the impact of doping concentration and applied electric field on both the linear and nonlinear optical properties based upon the intersubband transitions of CdSe/MgSe single quantum well (QWs) in the framework of the Effective Mass Approximation (EMA) using the compact density matrix approach. The energy levels and their relative wave functions are obtained by solving the coupled equations of Schrödinger-Poisson by the Finite Difference Method (FDM) under the envelope wave functions approximation. The third order nonlinear optical susceptibility, the refractive index change (RIC) and the absorption coefficient (AC) were investigated as a function of doping concentration. The numerical results revealed that the increase of the doping concentration ND blue shifts the peak position of the linear and nonlinear optical properties with a substantial enhancement of their magnitudes. The same behavior related to the third order nonlinear susceptibility was noted when the considered structure is undergone to an external electric field.
Thermochemistry of Monocharged Anion Substitutions in Ionic Solids
Authors: Glasser Leslie 
Published: January 2024

Abstract
Modification of materials to achieve specific changes in their physical and chemical properties often involves the substitution of ions. While this process is commonly discussed in structural terms, our recent publication focussed on exploring the thermochemical consequences, including enthalpy, entropy, heat capacity, and formula unit volume, associated with substituting monocharged cations for sodium ions as a reference set. In the current study, we extend our analysis to investigate the consequences of substituting monocharged anions, specifically the halides F−, Br−, I−, as well as H−, OH−, and NO3−, for chloride anions. This exploration is conducted through least-squares regression analysis of data obtained from 431 chloride ion-exchanged materials. In the case of cation substitutions, the regression trendlines for different substitutions appear to be roughly parallel to each other but vertically displaced. For anion substitutions, however, the trendlines for enthalpy and formula unit volume exhibit a fan-like spread from their data origin. We delve into the reasons behind this observed difference. A detailed analysis of a few outliers is undertaken to identify potential reasons for the discrepancies. These findings contribute to a better understanding of the implications and variations in ion substitutions, shedding light on the intricacies of material modification processes.
The sensitivity of acute myeloid leukemia cells to cytarabine is increased by suppressing the expression of Heme oxygenase-1 and Hypoxia-inducible factor 1-alpha
Authors: Sadeghi Mohammad , Moslehi Asma , Kheiry Hadiseh , Kiani Fariba Karoon , Khodakarami Atefeh , Karpisheh Vahid , Masjedi Ali , Rahnama Badrossadat , Hojjat-Farsangi Mohammad , Raeisi Mortaza , Yousefi Mehdi , Akbari Ali Akbar Movasaghpour , Jadidi-Niaragh Farhad 
Published: January 2024

Abstract
Background
Acute myeloid leukemia (AML), a malignancy Often resistant to common chemotherapy regimens (Cytarabine (Ara-c) + Daunorubicin (DNR)), is accompanied by frequent relapses. Many factors are involved in causing chemoresistance. Heme Oxygenase-1 (HO-1) and Hypoxia-Inducible Factor 1-alpha (HIF-1α) are two of the most well-known genes, reported to be overexpressed in AML and promote resistance against chemotherapy according to several studies. A main chemotherapy agent used for AML treatment is Ara-c. We hypothesized that simultaneous targeting of HO-1 and HIF-1α could sensitize AML cells to Ara-c.
Method
In this study, we used our recently developed, Trans-Activator of Transcription (TAT) - Chitosan-Carboxymethyl Dextran (CCMD) - Poly Ethylene Glycol (PEG) - Nanoparticles (NPs), to deliver Ara-c along with siRNA molecules against the HO-1 and HIF-1α genes to AML primary cells (ex vivo) and cell lines including THP-1, KG-1, and HL-60 (in vitro). Subsequently, the effect of the single or combinational treatment on the growth, proliferation, apoptosis, and Reactive Oxygen Species (ROS) formation was evaluated.
Results
The designed NPs had a high potential in transfecting cells with siRNAs and drug. The results demonstrated that treatment of cells with Ara-c elevated the generation of ROS in the cells while decreasing the proliferation potential. Following the silencing of HO-1, the rate of apoptosis and ROS generation in response to Ara-c increased significantly. While proliferation and growth inhibition were considerably evident in HIF-1α-siRNA-transfected-AML cells compared to cells treated with free Ara-c. We found that the co-inhibition of genes could further sensitize AML cells to Ara-c treatment.
Conclusions
As far as we are aware, this study is the first to simultaneously inhibit the HO-1 and HIF-1α genes in AML using NPs. It can be concluded that HO-1 causes chemoresistance by protecting cells from ROS damage. Whereas, HIF-1α mostly exerts prolific and direct anti-apoptotic effects. These findings imply that simultaneous inhibition of HO-1 and HIF-1α can overcome Ara-c resistance and help improve the prognosis of AML patients.
Effects of jejunum ATPase activity and antioxidant function on the growth performance, feed conversion efficiency, and intestinal flora of Hu sheep (Ovis aries)
Authors: Chen Zhanyu , Wang Guoxiu , Wang Weimin , Wang Xiaojuan , Huang Yongliang , Jia Jiale , Gao Qihao , Xu Haoyu , He Lijuan , Xu Yunfei , Liu Zhen , Sun Jinlin , Li Chong 
Published: January 2024

Abstract
Background ATPase activity and the antioxidant function of intestinal tissue can reflect intestinal cell metabolic activity and oxidative damage, which might be related to intestinal function. However, the specific influence of intestinal ATPase activity and antioxidant function on growth performance, feed conversion efficiency, and the intestinal microbiota in sheep remains unclear.Results This study analyzed the correlation between ATPase activity and antioxidant function in the jejunum of 92 Hu sheep and their growth performance and feed conversion efficiency. Additionally, individuals with the highest (H group) and lowest (L group) jejunum MDA content and Na+ K+-ATPase activity were further screened, and the effects of jejunum ATPase activity and MDA content on the morphology and microbial community of sheep intestines were analyzed. There was a significant correlation between jejunum ATPase and SOD activity and the initial weight of Hu sheep (P < 0.01). The H-MDA group exhibited significantly higher average daily gain (ADG) from 0 to 80 days old and higher body weight (BW) after 80 days. ATPase and SOD activities, and MDA levels correlated significantly and positively with heart weight. The jejunum crypt depth and circular muscle thickness in the H-ATP group were significantly higher than in the L-ATP group, and the villus length, crypt depth, and longitudinal muscle thickness in the H-MDA group were significantly higher than in the L-MDA group (P < 0.01). High ATPase activity and MDA content significantly reduced the jejunum microbial diversity, as indicated by the Chao1 index and observed species, and affected the relative abundance of specific taxa. Among species, the relative abundance of Olsenella umbonata was significantly higher in the H-MDA group than in the L-MDA group (P < 0.05), while Methanobrevibacter ruminantium abundance was significantly lower than in the L-MDA group (P < 0.05). In vitro culture experiments confirmed that MDA promoted the proliferation of Olsenella umbonata. Thus, ATPase and SOD activities in the jejunum tissues of Hu sheep are predominantly influenced by congenital factors, and lambs with higher birth weights exhibit lower Na+ K+-ATPase, Ca2+ Mg2+-ATPase, and SOD activities.Conclusions The ATPase activity and antioxidant performance of intestinal tissue are closely related to growth performance, heart development, and intestinal tissue morphology. High ATPase activity and MDA content reduced the microbial diversity of intestinal tissue and affect the relative abundance of specific taxa, representing a potential interaction between the host and its intestinal microbiota.
Synthesis, physicochemical, XRD/HSA-interactions, Heteromeric [CH⋅⋅⋅Cl/CH⋅⋅⋅πPh] synthon, DFT, thermal and 1BNA-DNA docking of cis-Ni(S,N) 2 complex using hydrazine carbodithioate Schiff base
Authors: Boshaala Ahmed , Al-Maharik Nawaf , Qrareya Hisham , Abrahem Abrahem F. , Muhmoud Iman , Kaziri Ibtisam , Alghazeerr Rabia , Greesh Nagi , Zarrouk Abdelkader , Shalalin Khalil , Warad Ismael 
Published: January 2024

Abstract
The reaction of bidentate-S,N-thione Schiff base ligand, Phenyl (E)-2-(1-phenylethylidene)hydrazine-1-carbodithioate (PPEHCDT) with NiCl2.3H2O produced a neutral NiII(S,N)2 complex in high yield. The structural formula of the obtained material was established by, EDX, FAB-MS, UV-Vis, IR, CHN and XRD-crystal analysis. The XRD-results revealed a cis-isomer as anionic S-thiol and bis-bidentate-N-azomethine and as well as a slightly distorted square planar neutral cis-Ni(PPEHCDT)2 complex. In contrast, the DFT simulation supported a distorted tetrahedral as favor geometry, despite that the XRD/DFT structural parameters results were in agreement. Moreover, the Molecular Electrostatic Potential (MEP) together with the Hirshfeld Surface Analysis (HSA) confirmed the XRD seen in appearing of the Heteromeric sub-synthons via C-H….πPh and C-H⸱⸱⸱S interactions. Moreover, the thermal properties of the cis-Ni(PPEHCDT)2 complex was determined via TG/DTG. Additionally, molecular docking has been evaluated for both, the free ligand and its cis-Ni(PPEHCDT)2 complex against 1BNA-DNA.
Emergence of exchange bias in van der Waals magnetic alloy CrxPt1-xTe2
Authors: Bailey-Crandell Ryan , Huey Warren , Williams Archibald , Zhou Wenyi , Goldberger Joshua , Kawakami Roland 
Published: January 2024

Abstract
CrxPt1-xTe2 is a recently developed van der Waals magnetic alloy noted for its stability under ambient conditions. Here, we report the emergence of an exchange bias effect in CrxPt1-xTe2, without typical exchange bias sources such as an adjacent antiferromagnetic layer. We find that the exchange bias is present for x = 0.45 and absent for x = 0.35, which is correlated to the presence of a Cr modulation where the Cr concentration alternates each vdW layer (modulation period of 2 layers) for x > 0.4. We perform Monte Carlo simulations utilizing exchange parameters from first-principles calculations, which recreate the exchange bias in hysteresis loops of CrxPt1-xTe2. From our simulations, we infer the source of exchange bias to be magnetic moments locked into free energy minima that resist magnetization reversal. This work presents a way to introduce desirable magnetic properties to van der Waals magnets.
In silico and in vitro study of rice bran peptides for the treatment of oxidative stress diabetes and hypertension
Authors: Amin Md. Ruhul , Mojumder Md Nijamuddin , Alauddin Md , Rahman Md Ratul , Ferdous Nilufa , Faruque Md. Omar , Siddiquee Muhammad Ali , Howlader Zakir Hossain 
Published: January 2024

Abstract

The study explores the health benefits of rice bran protein hydrolysates and bioactive peptides, focusing on their anti-oxidative, anti-diabetic, and anti-hypertensive properties through in-silico and in-vitro analyses. Rice bran proteins were isolated and in vitro enzymatically digested to assess soluble peptide concentration, degree of hydrolysis (DH), anti-oxidative properties, and inhibitory activity against α-amylase and angiotensin-I-converting enzyme (ACE). This study indicates a higher degree of protein hydrolysis (84.0-99.1%) in various rice bran protein fractions, demonstrating increased hydrolysis with both single and multiple enzyme digestion. The alcalase enzyme was notably efficient for the DH of all protein hydrolysates, and the combination of enzymes (alcalase-trypsin) exhibited the highest DH in the prolamin fraction. Moreover, alcalase-trypsin (4h digested) demonstrated significant inhibitory activity against α-amylase and ACE, respectively. Additionally, in-silico studies were implemented to investigate bioactive peptides binding affinity to the target protein compared to reference drugs. Our study discovered that YY and IP peptides exhibit the highest binding affinity to ACE and α-amylase target proteins, respectively. Moreover, these peptides demonstrated favorable oral bioavailability and non-toxic behavior compared to reference drugs in molecular dynamics (MD) simulations. This encourages the development of nutraceuticals and dietary supplements based on rice bran protein hydrolysates, supported by additional in-vivo research.
A multilayer Doyle-Fuller-Newman model to optimise the rate performance of bilayer cathodes in Li ion batteries
Authors: Tredenick E. C. , Wheeler S. , Drummond R. , Sun Y. , Duncan S. R. , Grant P. S. 
Published: January 2024

Abstract

Bilayer cathodes comprising two active materials are explored for their ability to improve lithium-ion battery charging performance. Electrodes are manufactured with various arrangements of lithium nickel manganese cobalt oxide Li[Ni0.6Co0.2Mn0.2]O2 (NMC622) and lithium iron phosphate LiFePO4 (LFP) active particles, including in two different discrete sub-layers. We present experimental data on the sensitivity of the electrode C rate performance to the electrode design. To understand the complex bilayer electrode performance, and to identify an optimal design for fast charging, we develop an extension to the Doyle-Fuller-Newman (DFN) model of electrode dynamics that accommodates different active materials in any number of sub-layers, termed the multilayer DFN (M-DFN) model. The M-DFN model is validated against experimental data and then used to explain the performance differences between the electrode arrangements. We show how the different open circuit potential functions of NMC and LFP can be exploited synergistically through electrode design. Manipulating the Li electrolyte concentration increases achievable capacity. Finally the M-DFN model is used to further optimise the best performing bilayer electrode arrangement by adjusting the ratio of the LFP and NMC sub-layer thickness.
Partial Cooperation, Spatial Agglomeration, and Heterogeneity of Firms in a Horizontal and Vertical Differentiation
Authors: Chen Tai-Liang , Huan Fengning 
Published: January 2024

Abstract

This paper constructs a horizontally and vertically differentiated product model in a repeated, collusive pricing game. Based upon different profit-sharing rules, it examines the interacting effects of (vertical) quality distortion and cost difference on (horizontal) market competition. It shows that the asymmetry between marginal cost and perceived quality matters for the emergence of agglomeration. If the magnitude of cost differentials between firms is equal to the magnitude of quality difference, minimal horizontal differentiation emerges in each period regardless of the order of moves and profit-sharing rules. If the magnitudes of cost and quality differences differ, non-minimal horizontal differentiation emerges in each period in a simultaneous-move game. In a sequential-move game, the second-mover advantage exists if the second mover’s strong suit dominates the first mover’s one. Spatial agglomeration/minimal differentiation emerges when the second mover chooses the same location as the first mover under profit maximization. The heterogeneity creates a conflict of interest between firms. Hence, agglomeration appears with the heterogeneity of firms under certain conditions in equilibrium.
JEL classification: C70, D43, L11, R12
Molecular markers of artemisinin resistance during falciparum malaria elimination in Eastern Myanmar
Authors: Thu Aung Myint , Phyo Aung Pyae , Pateekhum Chanapat , Rae Jade , Landier Jordi , Parker Daniel M , Delmas Gilles , Watthanaworawit Wanitda , McLean Alistair R. D. , Arya Ann , Reyes Ann , Li Xue , Miotto Olivo , Soe Kyaw , Ashley Elizabeth A , Dondorp Arjen , White Nicholas J , Day Nicholas P , Anderson Tim J. C , Imwong Mallika , Nosten Francois , Smithuis Frank M 
Published: January 2024

Abstract

Background
Artemisinin resistance in Plasmodium falciparum threatens global malaria elimination efforts. To contain and then eliminate artemisinin resistance in Eastern Myanmar a network of community-based malaria posts was instituted and targeted mass drug administration (MDA) with dihydroartemisinin-piperaquine (three rounds at monthly intervals) was conducted. The prevalence of artemisinin resistance during the elimination campaign (2013-2019) was characterized.
Methods
Throughout the six-year campaign Plasmodium falciparum positive blood samples from symptomatic patients and from cross-sectional surveys were genotyped for mutations in kelch-13 – a molecular marker of artemisinin resistance.
Result
The program resulted in near elimination of falciparum malaria. Of 5,162 P. falciparum positive blood samples genotyped, 3,281 (63.6%) had K13 mutations. The prevalence of K13 mutations was 73.9% in 2013 and 64.4% in 2019. Overall, there was a small but significant decline in the proportion of K13 mutants (p<0.001). In the MDA villages there was no significant change in the K13 proportions before and after MDA. The distribution of different K13 mutations changed substantially; F446I and P441L mutations increased in both MDA and non-MDA villages, while most other K13 mutations decreased. The proportion of C580Y mutations fell from 9.2% (43/467) before MDA to 2.3% (19/813) after MDA (p<0.001). Similar changes occurred in the 487 villages where MDA was not conducted.
Conclusion
The malaria elimination program in Kayin state, eastern Myanmar, led to a substantial reduction in falciparum malaria. Despite the intense use of artemisinin-based combination therapies, both in treatment and MDA, this did not select for artemisinin resistance.
Chronoamperometric determination of the diffusion coefficient in molten chlorides
Authors: Kim In Ui , Kim Junhyeong , Lee Chang Hwa , Cho Sung Ki 
Published: January 2024

Abstract

In this study, a method based on chronoamperometry (CA) with a simple unshielded microwire electrode and macroelectrode was used to estimate the diffusion coefficient (D) of the electroactive species in molten chlorides without any knowledge of its concentration. Theoretically evaluated CA response ratios of the two electrodes were fitted to the values obtained from digital simulations and experiments within a measurement time of 1 s, and the D value was determined as a fitting parameter. Theoretical and experimental analyses of the CA response under pure diffusion-controlled conditions confirmed the applicability of the proposed method for the determination of D for any electroactive species, regardless of its reaction kinetics characteristics. The D values of Eu3+ and Cr2+ in molten LiCl–KCl at 450 ℃, which were determined from the CA of their reduction reactions and validated by simulations of the microwire-electrode CA response, were consistent with previously reported values. However, the D of Cr2+ could not be accurately determined from the CA of its oxidation, possibly owing to the additional chronoamperometric current generated by the dissolution of the Au electrode. Therefore, the prevention of side reactions is vital for the accurate estimation of D. The proposed method could facilitate future research on molten salts and their properties.
Effect of Gender on Spect Myocardial Perfusion Imaging Results in Egypt
Authors: Ahmed Taghreed Abdel-Rahman , AL-HABBAA Ahmed , Naiem Mona , Mokhtar Naglaa , Elhady Fatma 
Published: January 2024

Abstract
Background
Ischemic heart disease (IHD) is one of the leading causes of morbidity and mortality around the world. Men are more affected than women and the more the population age, the more is the prevalence. There was a concern about improper referral of women to MPI testing. We aim to study if there a gender effect on the results of MPI studies and if this could have an impact on future referral or investigation selection for diagnosis of IHD as a general or specially in women.
Methods
The current study was a retrospective observational study that enrolled 443 consecutive patients who were candidates for myocardial perfusion imaging. The study was conducted throughout the period from January 2021 to October 2023.
Results
Female gender represented 266 (60%) while male represented in 177 (40%). Males demonstrated significantly higher age (55 ± 10 vs. 49 ± 9, P < .0001), weight (85 ± 11 vs. 83 ± 13, P = 0.006), height (166 ± 4 vs. 165 ± 4, P = 0.02), and smoking (35% vs. 0%, P < 0.001) than females. Male gender was associated with ten times increased risk of positive MPI (OR = 10, 95% CI = 5.348–18.868, P < 0.001). Diabetes was associated with an increased risk of positive MPI (OR = 1.82, 95% CI = 1.052–3.148, P = 0.032).
Conclusions
Positive MPI test are more common in males. Female patients with positive MPI were younger in age than male patients. Diabetes mellitus and age are traditional strong predictors for the presence of positive MPI test.
An Integrated Technique for Securing Large Virtual Machine Migration
Authors: Bhattacharjee Shiladitya , Choudhury Tanupriya , Abdelmoniem Ahmed M. , Kotecha Ketan 
Published: January 2024

Abstract

Maintaining data confidentiality and integrity during the large VM migration is quite challenging. Simultaneously, the use of complex encryption or steganography for managing them increases data and time overheads. These may cause data loss. The transportation of large VMs further consumes significant bandwidth and causes page faults. However, these issues aren't dealt with in modern literature, despite many research attempts. Moreover, unlawful intrusions and various transmission errors make these matters worse. Hence, this research work proposes an efficient technique that addresses such outstanding issues in a unified way. The suggested solution has a special data compression method that reduces big VM sizes to 53.9%, a new steganography method to enhance data confidentiality and integrity, and a smart split migration method to stop page faults as well as lower data loss to 0.0009%. The results further show that it cuts down on downtime by 10% more than the existing VM migration methods. The obtained results justify its efficiencies over other existing ones in distinct dimensions.