bluuebunny/crossref_metadata_2025 huggingface dataset:
Importance of multi-step processes in the Coulomb and nuclear breakups of 15C halo nucleus
Authors: Mukeru B. , Ndala L. V. , Lekala M. L.
Published: March 2022

Breakup reactions involving heavy targets are known to be dominated by the Coulomb breakup, and this is understood as due to the long-range nature of Coulomb forces and a large charge of the target nucleus. In this paper, we intended to find out whether these two factors alone can justify the large importance of the Coulomb breakup over its nuclear counterpart. To this end, we considered the [Formula: see text] breakup reaction at an incident energy of [Formula: see text]. By analyzing this reaction, it is found that the continuum–continuum couplings and higher-order multipole transitions, which are characteristic of nuclear reactions induced by loosely bound projectiles, strongly suppress the nuclear breakup cross-section and have a negligible effect on the Coulomb breakup cross-section. When these reaction dynamics are removed, the nuclear breakup cross-section becomes more important than the Coulomb breakup cross-section at large incident angles.

In conclusion, these results infer that the predominance of the Coulomb breakup over the nuclear breakup in reactions involving heavy targets can be explained by three main factors: the large target charge and the long-range nature of Coulomb, as well as the prevailing reaction dynamics such as continuum–continuum couplings and higher-order multipole transitions. These results could motivate further improvements on the theoretical approaches used in pure Coulomb breakup calculations.
The limit behavior of SEIRS model in spatial grid
Authors: Gao Hongjun , Liu Shuaipeng , Xiao Yeyu
Published: March 2022

In this paper, we study a SEIRS model with Neumann boundary condition for a population distributed in a spatial grid. We first discuss the existence and uniqueness of global positive solution with any given positive initial value. Next, we introduce the basic reproduction number of this model. Then we consider the relation between the system of PDE and the discrete ODE model. Finally, we consider the stochastic model and give two laws of large numbers.
Optical and photophysical properties of platinum benzoporphyrins with C2v and D2h symmetry
Authors: Han Ting , Jang Youngwoo , Arvidson Jacob , D’Souza Francis , Wang Hong
Published: March 2022

Platinum(II) mono- and di-benzoporphyrins carrying either ester or imide peripheral groups have been successfully synthesized. These benzoporphyrins possessing C[Formula: see text] and D[Formula: see text] symmetry were investigated using a range of techniques including UV-Vis and phosphorescence spectroscopy, differential pulse voltammetry, and transient absorption spectroscopy covering wide spatial and temporal ranges. Up to three oxidation and three reductions within the accessible potential window of dichlorobenzene were observed. Facile reductions for both mono- and dibenzoporphyrin derivatives, more so with imide peripheral substituents were witnessed. Computational studies were supportive of push-pull type interactions within these molecular systems. The formation of triplet excited states within 5 ps after laser excitation was confirmed by femtosecond transient absorption studies. Nanosecond transient absorption studies coupled with phosphorescence lifetime studies revealed relatively rapid relaxation of the triplet excited states as compared to a controlled platinum porphyrin suggesting push-pull type interactions on a slower time scale.
Measured expanders
Authors: Li Kang , Špakula Ján , Zhang Jiawen
Published: March 2022

By measured graphs, we mean graphs endowed with a measure on the set of vertices. In this context, we explore the relations between the appropriate Cheeger constant and Poincaré inequalities. We prove that the so-called Cheeger inequality holds in two cases: when the measure comes from a random walk, or when the measure has a bounded measure ratio. Moreover, we also prove that our measured (asymptotic) expanders are generalised expanders introduced by Tessera. Finally, we present some examples to demonstrate relations and differences between classical expander graphs and the measured ones. This paper is motivated primarily by our previous work on the rigidity problem for Roe algebras.
Indicated coloring of the Mycielskian of some families of graphs
Authors: Francis P.
Published: March 2022

Indicated coloring is a graph coloring game in which two players collectively color the vertices of a graph in the following way. In each round, the first player (Ann) selects a vertex, and then the second player (Ben) colors it properly, using a fixed set of colors. The goal of Ann is to achieve a proper coloring of the whole graph, while Ben is trying to prevent the realization of this project. The smallest number of colors necessary for Ann to win the game on a graph G (regardless of Ben’s strategy) is called the indicated chromatic number of G, denoted by [Formula: see text]. In this paper, we examine whether the Mycielskian of G, [Formula: see text], is k-indicated colorable for all [Formula: see text], whenever G is l-indicated colorable for all [Formula: see text]. In this direction, we prove that the Mycielskian of the bipartite graphs, complete multipartite graphs, [Formula: see text]-free graphs, [Formula: see text]-free graphs, [Formula: see text]-free graphs and [Formula: see text]-free graphs are k-indicated colorable for all k greater than or equal to the indicated chromatic number of the corresponding graphs.
THE REGIONAL ROLES ALONGSIDE THE EVOLUTION OF CARBON TRANSFER STRUCTURE WITHIN CHINA: A PERSPECTIVE FROM THE NATIONAL VALUE CHAIN
Authors: WANG SHUYU , WU JIE , XU GUOXIANG
Published: March 2022

To strengthen the national efforts to meet Paris Agreement Targets, China has announced its carbon neutrality goal in 2020 and launched the national carbon market in 2021. Regional carbon emissions accounting is important for the allocation of regional mitigation targets and emission allowances in the policy-making of the national carbon market. This paper integrates the trade in value-added (TiVA) accounting method to comprehensively analyze the evolution of the carbon emissions transfer network in China along the national value chain (NVC) and further clarifies the changing roles of regions participating in the network during 2007–2017. The results indicate that the inter-regional carbon emissions transfer structure in China has changed from the pattern of “transferring from inland areas to developed areas” to a new pattern of a “carbon emissions transfer network with the Yangtze River Delta and the Central regions as pivots”. This paper provides insightful results for China to strike a balance between economic development and environmental governance among regions in achieving carbon neutrality.
Social Media, Consumer Behaviour and Information Disclosure: Evidence from the MERS Outbreak in South Korea
Authors: Joo Hailey Hayeon , Kang Hyoung-Goo , Lee Jungmin
Published: March 2022

South Korea’s health officials did not disclose the identities of hospitals exposed to MERS-CoV for the first three weeks of the outbreak in 2015, leading to amplified fear in the society. To ascertain the uncertainty costs due to the failure of timely information provision, we examine the effect of the information regarding MERS outbreak on shopping patterns in the retail market. We find that those facing social buzz of MERS hospitals near their home significantly reduced their spending at crowded shopping places such as big-box and department stores. However, the avoidance behaviour disappeared after the government started to disclose the accurate information. This finding suggests that the information uncertainty raised excessive anxiety among the consumers.
Sequential Recommendation with Multiple Contrast Signals
Authors: Wang Chenyang , Ma Weizhi , Chen Chong , Zhang Min , Liu Yiqun , Ma Shaoping
Published: March 2022

Sequential recommendation has become a trending research topic for its capability to capture dynamic user intents based on historical interaction sequence. To train a sequential recommendation model, it is a common practice to optimize the next-item recommendation task with a pairwise ranking loss. In this paper, we revisit this typical training method from the perspective of contrastive learning and find it can be taken as a specialized contrastive learning task conceptually and mathematically, named
context-target contrast
. Further, to leverage other self-supervised signals in user interaction sequences, we propose another contrastive learning task to encourage sequences after augmentation, as well as sequences with the same target item, to have similar representations, called
context-context contrast
. A general framework, ContraRec, is designed to unify the two kinds of contrast signals, leading to a holistic joint-learning framework for sequential recommendation with different contrastive learning tasks. Besides, various sequential recommendation methods (e.g., GRU4Rec, Caser, and BERT4Rec) can be easily integrated as the base sequence encoder in our ContraRec framework. Extensive experiments on three public datasets demonstrate that ContraRec achieves superior performance compared to state-of-the-art sequential recommendation methods.
Degradation Behavior of Graphite–Nickel Cobalt Aluminum Oxide Lithium Ion Cells with Series Connections Including an Overcharged Cell
Authors: Togasaki Norihiro , Yokoshima Tokihiko , Osaka Tetsuya
Published: March 2022

Cycle life of series-connected lithium-ion battery (LIB) modules in the presence or absence of an overcharged cell is reported, and degradation behavior is characterized by electrochemical impedance spectroscopy (EIS) and differential voltage analysis (DVA). Three-stage capacity decay is solely observed in modules in the presence of an overcharged cell, which is exposed to a state of charge (SoC) of ≥105% during cycling. The module without overcharged cells or with an overcharged cell at an SoC of <103% exhibits capacity decay as a function of the square root of cycle numbers. EIS and DVA analyses confirmed that the overcharged cell with an SoC of ≥105% in the module deteriorates more harshly than the other cells and that deterioration occurs especially at the cathode. Cycle dependence of the charge/discharge cutoff voltage of LIBs revealed that the cell capacity of the overcharged cell shrinks with the end point on charge as a fulcrum, thereby decreasing the lower cutoff voltage as cycling progresses. Such a voltage change of an overcharged cell directly affects module capacity, leading to three-stage capacity decay. This study reveals a potential risk in series-connected cells using a wide SoC range and provides critical insights for safe operation without balance circuits.
An Investigation of the Electrochemical Activity of (Ba/Sr)FeO3-y Anodes
Authors: Paige Julian M. , Ma Liang , Chigbu Ceydrick , Liu Xingbo , Gorte Raymond J. , Vohs John M.
Published: March 2022

FeOx, SrFeO3-y (SF), and Ba0.5Sr0.5FeO3−y (BSF) were studied for application as fuel oxidation catalysts in solid oxide fuel cells (SOFC) anodes. Electrodes were prepared by impregnation into porous yttria-stabilized zirconia (YSZ), with La0.3Sr0.7TiO3−y (LST) added for electronic conductivity. The electrode impedances decreased dramatically upon addition of SF and BSF and much less when only SrO or FeOx were added. Temperature Programmed Desorption (TPD) of O2 from oxidized BSF showed O2 desorbing between 200 °C and 700 °C, while no O2 desorbed from Fe2O3 below 900 °C. The results, together with thermodynamic analysis, suggest that stabilization of Fe+4 in the perovskite lattice plays an important role in enhancing the catalytic activity of SF and BSF by providing access to a Fe3+/Fe4+ redox couple that can accept oxygen anions from the yttria-stabilized zirconia (YSZ) electrolyte. Oxygen is weakly bound to these sites facilitating its reaction with adsorbed H2.
The Role of an In-Situ Grown Zn-Al Layered Double Hydroxide Conversion Coating in the Protective Properties of Epoxy Coating on Galvanized Steel
Authors: Amanian Sima , Naderi Reza , Mahdavian Mohammad
Published: March 2022

A Zn–Al layered double hydroxide (LDH) conversion coating was investigated as a surface treatment for galvanized steel. Zn–Al LDH crystals were grown in situ on the galvanized steel surface in room temperature at different periods. Grazing Incidence Xray Diffraction verified the formation of Zn–Al LDH flakes on the surface. Scanning Electron Microscopy showed that Zn–Al LDH flakes were evenly distributed as a continuous coating on the surface of galvanized steel. Roughness and surface free energy of the coatings were evaluated by Atomic Force Microscopy and contact angle measurements. Corrosion propensity of the LDH coatings was analyzed utilizing Electrochemical Impedance Spectroscopy (EIS) and polarization. A 6 times increase in impedance at 0.01 Hz and 10 times decrease in corrosion current density was achieved for galvanized steel by LDH conversion coating in best practice. To assess the role of the LDH conversion coatings on adhesion strength and corrosion resistance of overlying organic coatings, epoxy coating was applied on LDH conversion coated surfaces and tested by pull-off, salt spray and EIS. Results signified 23 times increase in impedance at 0.01 Hz and 80% decrease in adhesion loss for organically coated galvanized steel after LDH treatment at optimal condition.
Synergistic Evaluation between Decoupled Electrolysis for Water Splitting and Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Simulation Study
Authors: Sodiro Bruno , Monteverde Alessandro
Published: March 2022

The combination of two innovative processes for hydrogen production and storage is presented and evaluated. The first process, named Electrochemical thermally Activated Chemical (ETAC) cycle, involves the temporal decoupling of hydrogen production, while the second process involves the hydrogenation of an organic molecule (methylcyclohexane, MTH). The models for ETAC and MTH systems are implemented on Aspen Plus, assuming a cycle behavior computed with calculator blocks, and validated against experimental data. Simulation studies are performed, including parametric sensitivity analysis, to evaluate effects of applied load, temperature, and pressure. Finally, an energy analysis is performed to assess the efficiency of the overall system. The study revealed that integrating thermically both processes (ETAC + MTH) is advantageous as it leads to an overall increase of energy efficiency compared to commercially available solutions. In addition, this work addresses the issue of the limitations of these technologies and proposes a cost analysis, particularly for the ETAC System. This manuscript provides an innovative approach for Power-to-H2, addressing actual challenges towards an efficient use of renewable energy.
Improving Driving Current with High-Efficiency Landing Pads Technique for Reduced Parasitic Resistance in Gate-All-Around Si Nanosheet Devices
Authors: Tian Jiajia , He Yujuan , Zhang Qingzhu , Wu Cinan , Cao Lei , Yao Jiaxin , Mao Shujuan , Luo Yanna , Zhang Zhaohao , Li Yongliang , Xu Gaobo , Li Bo , Han Yanchu , Liu Yang , Li Junjie , Wu Zhenhua , Wang Guilei , Kong Zhenzhen , Liu Jinbiao , Yang Hong , Zhang Yongkui , Radamson Henry H. , Yin Huaxiang , Luo Jun , Wang Wenwu
Published: March 2022

In this paper, in order to improve the driving ability of vertically-stacked gate-all-around (GAA) Si nanosheets (NSs) devices, a high-efficiency hybrid pattern technique with the SiNx spacer-image transfer (SIT) and conventional photolithography pattern was proposed and implemented to form size-enlarged landing pads (LPs) on nanscale fins at the same time, which increase the volumes of electrical conductance pathway between NS channels and source and drain (SD) electrodes with high process efficiency and compatibility with traditional mass production technology. Due to introduced new structures, the parasitic resistance of the devices is reduced by 99.8% compared with those of w./o. LPs. Therefore, ∼3 times and ∼2 times driving current enhancements for 500 nm gate length n-type and p-type MOSFETs are obtained, respectively. The results indicate the proposed GAA NS FET fabrication process with LPs by high-efficiency hybrid pattern technique a promising solution for improving the device driving ability for stacked GAA Si NSs devices in future.
Systematic Investigation of Growth and Properties of Ga2O3 Films on C-Plane Sapphire Substrates Prepared by Plasma-Assisted Molecular Beam Epitaxy
Authors: Ngo Trong Si , Le Duc Duy , Vuong Nguyen Quoc , Hong Soon-Ku
Published: March 2022

We investigated the growth and properties of Ga2O3 films on c-plane sapphire substrates by plasma-assisted molecular beam epitaxy (PAMBE). Growth parameters generally affect the structure and properties of films. In growing Ga2O3 films on sapphire substrates by PAMBE, source flux and growth temperature are main key factors and effects of those on growth behaviors, surface morphology, crystallinity, structural quality, and optical properties have been investigated by systematic experimental design using various characterization methods including reflection high energy electron diffraction, atomic force microscope, X-ray diffraction, transmission electron microscopy etc. The source flux strongly affected growth rate of Ga2O3 films by PAMBE, and the growth temperature strongly affected surface morphology and structural properties. The orientation relationship was determined to be β-Ga2O3

2
¯

01

//Al2O3(0001) and β-Ga2O3[010]//Al2O3[

1

1
¯

00

]. However, the

2
¯

01

β-Ga2O3 films were not single crystalline but showed six-fold in-plane symmetry with six rotational domain structures. The detailed rotational domain structures were investigated by transmission electron diffraction analysis. The smooth surface with the RMS value of 0.95 nm can be obtained at growth temperature of 800 °C. All the grown

2
¯

01

β-Ga2O3 films are highly transparent and the optical bandgaps were 4.79–4.89 eV.
Inhomogeneous Barrier Height Characteristics of n-Type AlInP for Red AlGaInP-Based Light-Emitting Diodes
Authors: Cha Jung-Suk , Lee Da-hoon , Sim Kee-Baek , Lee Tae-Ju , Seong Tae-Yeon , Amano Hiroshi
Published: March 2022

For micro-light-emitting diode (LED)-based display applications, such as virtual reality and augmented reality, high-performance Ohmic contacts (namely, the improvement of current injection efficiency) is vital to the realization of high-efficiency micro-LEDs. The surface Fermi level pinning characteristics could be comprehended in terms of the relation between work function of metals (ΦM) and Schottky barrier height (SBH, ΦB). In this study, we have investigated the surface Fermi level pinning characteristics of (001) n-AlInP surfaces by employing Schottky diodes with different metals. With an increase in the temperature, ΦB increases linearly and ideality factors (n) decreases. This behavior is related to the barrier height inhomogeneity. Inhomogeneity-model-based ΦB is evaluated to be in the range of 0.86–1.30 eV, which is dependent on the metal work functions and are similar to those measured from capacitance-voltage relation. Further, The S-parameter, the relation between ΦB and ΦM (dΦB/dΦM), is 0.36. This is indicative of the partial pinning of the surface Fermi level at the surface states placed at 0.95 eV below the conduction band. Furthermore, it is also shown that (NH4)2S-passivation results in an increases the mean SBH and the S-parameter (e.g., 0.52).
Optimal Allocation of Resources for the Integrated Medical Care and Elderly Care Model under Dynamic Monitoring
Authors: Xu Dan , Liu Jun-Xia
Published: March 2022

Aiming at the problems of poor fairness of resource allocation and long time-consuming allocation of traditional methods, a method of resource optimization allocation under dynamic monitoring of medical care combined with elderly care mode is proposed. The integrated medical and elderly care model is analyzed, the role of dynamic monitoring in the optimal allocation of resources in the integrated medical and elderly care model is discussed, and a general model for optimal allocation of medical and elderly resources based on the analysis results is established. Based on the criterion of “minimum variance of estimation error,” a combined prediction model is established to obtain the combined prediction results. The investment objects of the optimal allocation of resources in the elderly care model are clustered in advance by using the clustering method, and the investment objects of the optimal allocation of resources in the elderly care model are comprehensively evaluated by using the principal component analysis method. According to the actual results of the comprehensive evaluation, the improved whale algorithm is used to allocate pension resources reasonably, and the fairness and applicability of the allocation results are analyzed experimentally. The results show that the method proposed in this paper has strong rationality and can effectively realize the rational distribution of pensions.
Analysis of the Fractional‐Order Delay Differential Equations by the Numerical Method
Authors: Masood Saadia , Naeem Muhammad , Ullah Roman , Mustafa Saima , Bariq Abdul
Published: March 2022

In this study, we implemented a new numerical method known as the Chebyshev Pseudospectral method for solving nonlinear delay differential equations having fractional order. The fractional derivative is defined in Caputo manner. The proposed method is simple, effective, and straightforward as compared to other numerical techniques. To check the validity and accuracy of the proposed method, some illustrative examples are solved by using the present scenario. The obtained results have confirmed the greater accuracy than the modified Laguerre wavelet method, the Chebyshev wavelet method, and the modified wavelet‐based algorithm. Moreover, based on the novelty and scientific importance, the present method can be extended to solve other nonlinear fractional‐order delay differential equations.
An Improved VM Obstacle Identification Method for Reflection Road
Authors: Jiang Guoxin , Xu Yi , Sang Xiaoqing , Gong Xiaotong , Gao Shanshang , Zhu Ruoyu , Wang Liming , Wang Yuqiong
Published: March 2022

An obstacle detection method based on VM (VIDAR and machine learning joint detection model) is proposed to improve the monocular vision system's identification accuracy. When VIDAR (Vision-IMU-based detection and range method) detects unknown obstacles in a reflective environment, the reflections of the obstacles are identified as obstacles, reducing the accuracy of obstacle identification. We proposed an obstacle detection method called improved VM to avoid this situation. The experimental results demonstrated that the improved VM could identify and eliminate unknown obstacles. Compared with more advanced detection methods, the improved VM obstacle detection method is more accurate. It can detect unknown obstacles in reflection, reflective road environments.
Spectral Radius Formulas Involving Generalized Aluthge Transform
Authors: Zhang Zhiqiang , Akram Muhammad Saeed , Hyder Javariya , Farid Ghulam , Yan Tao
Published: March 2022

In this paper, we aim to develop formulas of spectral radius for an operator

S

in terms of generalized Aluthge transform, numerical radius, iterated generalized Aluthge transform, and asymptotic behavior of powers of

S

. These formulas generalize some of the formulas of spectral radius existing in literature. As an application, these formulas are used to obtain several characterizations of normaloid operators.
Analysis on the Construction of Sustainable Operation Mechanism of Agricultural Product Supply Chain under the Background of Wireless Communication and Internet of Things
Authors: Wang Qianyi , Cai Yuqiu
Published: March 2022

Historical experience shows that the people’s happiness index is highly correlated with the development of agriculture. The prosperity of agriculture and industrial production has also brought most people into a well-off life. Since the innovation of agricultural production equipment and concepts, the efficiency of agricultural production in my country has also been greatly improved compared to before the reform and opening up. In the era when robots will gradually become mainstream work machinery tools, the production efficiency and supply of agricultural products will become the focus of attention of the people of all countries. In such a general environment, the competition between agricultural products markets is no longer solely based on the competitiveness of agricultural products but also depends on the advantages of the agricultural supply chain to win. This article analyzes the construction of the sustainable operation mechanism of the agricultural supply chain in the context of wireless communication and the Internet of Things. First, the method of literature research is used to explain the characteristics of the agricultural supply chain and the problems existing in the development of the current agricultural supply chain model in the context of wireless communication and the Internet of Things. Next, study the current situation of the sustainability mechanism of the agricultural supply chain, and finally optimize the construction of the sustainability mechanism of the agricultural supply chain products based on the research results. According to the survey results, the main problem with the current mechanism of the agricultural product supply chain at this stage is that the logistics information technology is difficult to update in time, accounting for about 44%, followed by the lack of effective monitoring methods, accounting for about 34%.
Effect of Clinical Nursing Pathway Intervention Based on Evidence-Based Medicine on Venous Thrombosis in Long-Term Bedridden Patients
Authors: Chen Jing , Wen Yanli , Jin Lin , Peng Junwei , Ji Jin
Published: March 2022

Background. Venous thrombosis is a type of medical condition that establishes as deep vein thrombosis of the limb or pulmonary embolism. This disease arises as a result of interrelating hereditary, ecological, and interactive risk aspects. Clinical nursing pathways also known as critical pathways are pathways that guide nurses when developing a patient’s care plan. However, the effect of nursing intervention on venous thrombosis in long-term bedridden patients from the perspective of evidence-based medicine had not been reported. Methods. A total of 170 patients hospitalized in the hospital from January 2021 to October 2021 were selected, and the bed time was more than 2 weeks. The patients were randomly divided into the control group and observation group. 85 cases in the control group received routine nursing in cardiology, and 85 cases in the observation group received clinical nursing pathway. Venous thrombosis, lower limb pain, swelling, D-dimer level, hemodynamic parameters, and nursing satisfaction were compared in two groups. Results. The incidence of deep venous thrombosis in the observation group was 8.2%, lower than 24.7% in the control group (

P

 < 0.05). The incidence of lower limb pain and elevated D-dimer in the observation group was lower than that in the control group (

P

 < 0.05). The improvement of hemodynamic parameters such as SBP, DBP, CBV, PR, CI, and CO in the study group was better than that in the control group (

P

 < 0.05). The satisfaction of the observation group was 90.58%, which was higher than that of the control group (82.35%) (

P

 < 0.05). Conclusion. Clinical nursing pathway can improve patients’ nursing efficiency, improve the treatment effect, shorten hospital stay, and improve nursing satisfaction.
Effect of Li-ESWT on Testicular Tissue and Function in Androgen-Deficient Rat Model
Authors: Tian Wen Jie , Jeon Seung Hwan , Cho Hyuk Jin , Ha U-Syn , Hong Sung-Hoo , Lee Ji Youl , Piao Jun Jie , Xin Zhong Cheng , Chen Ye Gang , Feng Hong Yu , Kim Sae Woong , Bae Woong Jin , Rajasekaran Mahadevan Raj
Published: March 2022

Low-intensity extracorporeal shockwave therapy (Li-ESWT), as a microenergy therapy, has the effects of inhibiting oxidative stress, antiapoptosis, and tissue repair, which is increasingly applied to a variety of diseases. Our research aims to explore the protective effects of Li-ESWT in the aging rat model and its possible molecular mechanism through in vivo and in vitro experiments. In vitro, TM3 Leydig cells incubated with H2O2 were treated with Li-ESWT at 4 energy levels (0.01, 0.05, 0.1, and 0.2 mJ/mm2). In vivo, we employed an androgen-deficient rat model to simulate male aging and treated it with Li-ESWT at three different energy levels (0.01, 0.05, and 0.2 mJ/mm2). Li-ESWT increased the expression of vascular endothelial growth factor (VEGF) in TM3 cells, improved antioxidant capacity, and reduced apoptosis, with the effect being most significant at 0.05 mJ/mm2 energy level. In androgen-deficient rat model, LI-ESWT can improve sperm count, motility, and serum testosterone level, enhancing tissue antioxidant capacity and antiapoptotic ability, and the effect is most significant at 0.05 mJ/mm2 energy level. Therefore, Li-ESWT at an appropriate energy level can improve sperm count, motility, and serum testosterone levels in androgen-deficient rat models, reduce oxidative stress in the testis, and increase antioxidant capacity and antiapoptotic abilities. The mechanism of this condition might be related to the increased VEGF expression in Leydig cells by Li-ESWT.
Static Characteristics of Finger Seal considering Contact between Fingers and Rotor
Authors: Zhang Sai , Jiao Yinghou , Chen Zhaobo , Zhang Enjie
Published: March 2022

Finger seals are a new type of seal with good sealing performance and long service life. The noncontacting feature relies on the gas film force. However, when the seal works in an unsuitable environment or its design parameters are not reasonable, the lifting pad may not be able to generate sufficient air film force. This causes contact between the fingers and the rotor, resulting in a reduced service life of the seal. In view of this situation, this paper proposes a method that can quickly determine whether there is enough gas film force to lift the sealing finger at the design stage. The aeroelastic coupling characteristics of the noncontacting finger seal are studied in conditions where contact exists between the fingers and the rotor. The influences of various environmental and key structural parameters on the number of contact fingers, leakage, bearing force, and friction moment are studied. The results show that the pressure difference, eccentricity, and key design parameters have important effects on the number of contact fingers. The effect of rotation speed is relatively small. This paper provides a time-efficient tool for the design of noncontacting finger seals, which can quickly predict the performance of the sealing system.
The Molecular Mechanism of Hepatic Lipid Metabolism Disorder Caused by NaAsO2 through Regulating the ERK/PPAR Signaling Pathway
Authors: Wu Liping , Zhang Shuling , Zhang Qi , Wei Shaofeng , Wang Guoze , Luo Peng
Published: March 2022

Chronic arsenic exposure is a risk factor for human fatty liver disease, and the ERK signaling pathway plays an important role in the regulation of liver lipid metabolism. However, whether ERK plays a role in the progression of arsenic-induced liver lipid metabolism disorder and the specific mechanism remain unclear. Here, by constructing a rat model of liver lipid metabolism disorder induced by chronic arsenic exposure, we demonstrated that ERK might regulate arsenic-induced liver lipid metabolism disorders through the PPAR signaling pathway. Arsenic could upregulate the expression of PPARγ and CD36 in the rat liver, decrease the expression of PPARα and CPT-1 in the rat liver, increase the organ coefficient of the rat liver, decrease the content of TG in rat serum, and promote fat deposition in the rat liver. In the arsenic-induced rat model of hepatic lipid metabolism disorder, we found that the expression of p-ERK was increased. In order to further explore whether the ERK signaling pathway was involved in arsenic-induced liver lipid metabolism disorder, we exposed L-02 cells to different arsenic concentrations, and the results showed that arsenic significantly increased the expression of P-ERK in L-02 cells in a dose-dependent manner. We further treated L-02 cells with ERK inhibitors and found that the expression of TG, PPARα, and CPT-1 in L-02 cells increased, while the expression of P-ERK, PPARγ, and CD36 decreased. In conclusion, ERK may be involved in arsenic-induced liver lipid metabolism disorder by regulating the PPAR signaling pathway. These findings are expected to provide a new targeting strategy for arsenic-induced liver lipid metabolism disorder.
The Clinical Effect of High-Flow Oxygen Therapy through the Nose on Patients with Acute Left Heart Failure and Hypoxemia
Authors: Hao Xinlei , Zhao Shuoran , Cheng Jiajia , Yang Lihua , Jiang Haiming , Qu Fuzheng
Published: March 2022

Objective. To evaluate the clinical efficacy of nasal high-flow oxygen therapy in patients with acute left heart failure and hypoxemia. Methods. From July 2016 to November 2018, patients with acute left heart failure complicated with hypoxemia treated in the Department of Critical Medicine of Yantai Affiliated Hospital of Binzhou Medical University were retrospectively observed (a total of 140 cases met the inclusion criteria). They were randomly divided into two groups, with 70 cases in each group. Patients were given continuous ECG monitoring, improved blood gas analysis test, and recorded HR, RR, map, SaO2, pH, PaO2, PaCO2, and Lac, perfect examination and color Doppler echocardiography, and record NT-proBNP and EF before and 24 hours after treatment. The effective rates of the two groups before and after oxygen therapy were detected. Results. There were 67 patients with high-flow oxygen therapy group improvement, 95.7% improvement rate, and 55 patients with general oxygen therapy group improvement rate. The treatment improvement rate was 78.6%. A total of 67 patients were treated with high-flow oxygen therapy. After high-flow oxygen therapy, HR (t = 18.8,

P
≤
0.05

), RR (t = 19.7,

P
≤
0.05

), MAP (t = 12.1,

P
≤
0.05

), PaCO2 (t = 9.53,

P
≤
0.05

), Lac (t = 8.69,

P
≤
0.05

), and NT-proBNP (t = 7.03,

P
≤
0.05

) were significantly lower than before. SaO2 (t = −12.4,

P
≤
0.05

), pH (t = −12.2,

P
≤
0.05

), PaO2 (t = −17.7,

P
≤
0.05

), and EF (t = −13.4,

P
≤
0.05

) were significantly higher than before. A total of 55 patients were in the general oxygen therapy group. After administration of ordinary oxygen therapy, HR (t = 18.2,

P
≤
0.05

), RR (t = 10.8,

P
≤
0.05

), MAP (t = 13.1,

P
≤
0.05

), PaCO2 (t = 15.8,

P
≤
0.05

), Lac (t = 7.1,

P
≤
0.05

), and NT-proBNP (t = 10,

P
≤
0.05

) were significantly lower than before. SaO2 (t = −15.5,

P
≤
0.05

), pH (t = −4.5,

P
≤
0.05

), PaO2 (t = −20,

P
≤
0.05

), and EF value (t = −7.7,

P
≤
0.05

) were significantly higher than before. Conclusion. High-flow oxygen therapy and general oxygen therapy have an obvious curative effect on patients with acute left heart failure and hypoxemia. Compared with the two, high-flow oxygen therapy is more effective. After high-flow oxygen therapy and general oxygen therapy in patients with acute left heart failure and hypoxia, HR, RR, MAP, SaO2, pH, PaO2, PaCO2, Lac, EF, and NT-proBNP value all improved, and the improvement of high-flow oxygen therapy was greater.
Entrepreneurial Bricolage Based on Big Data and Artificial Intelligence Decision-Making
Authors: Kang Xi , Zeng Yijun
Published: March 2022

After entering the new century, the rapid development of information technology has brought a huge impact to traditional social life, which has also triggered drastic changes in the production environment of enterprises. As long as we seize the opportunity of the development of the times, we will quickly accumulate huge wealth. Some new types of companies have surpassed traditional large companies with decades of history in a short period of time, which makes entrepreneurship very attractive. At the same time, the state has also given strong support to people’s entrepreneurship, encouraging capable people to start their own businesses in terms of policies and funds, which has stimulated a wave of entrepreneurship among the people. However, due to the short period of time for the construction of China’s market economy system, the vast majority of new ventures cannot obtain sufficient resource stock to grow and develop and can only turn to the external market to seek opportunities for development. Entrepreneurial bricolage has become a “keyword of the times” in recent years under this background. Previous studies have shown that entrepreneurial bricolage has a relatively positive effect in alleviating the plight of enterprise development resources, and many new ventures regard it as an important way to obtain development resources. The development of big data and artificial intelligence decision-making provides more possibilities for information sharing and personalized analysis and also gives new ventures more opportunities to choose development resources that suit their own characteristics. However, from the actual situation, it is obvious that Chinese enterprises have not achieved very obvious results in how to make full use of big data and artificial intelligence decision-making technology to improve their entrepreneurial and bricolage capabilities. Based on the technical support provided by big data and artificial intelligence decision-making, this research studies the entrepreneurial bricolage activities of China’s new ventures in this context, through the questionnaire survey and tracking analysis of 135 enterprises established in the two provinces from 2015 to 2020. After comparative analysis of a large amount of data, it is found that enterprises that combine big data and artificial intelligence technologies can obtain more high-quality resources and make more informed decisions in the process of starting a business. It can be concluded that the companies that have excellent application of big data and artificial intelligence decision-making technology have more opportunities to obtain ideal resources in entrepreneurial bricolage. The study conducted an in-depth analysis of the problems of China’s new ventures in entrepreneurial bricolage and put forward suggestions for improvement based on the specific conditions of this type of enterprise. It is hoped that it can help start-ups to realize the alleviation of resource constraints.
Mechanism of Herb Pairs Astragalus mongholicus and Curcuma phaeocaulis Valeton in Treating Gastric Carcinoma: A Network Pharmacology Combines with Differential Analysis and Molecular Docking
Authors: Wu Zixuan , Pan Xiyang , Deng Chaosheng , Cai Minjie , Yuan Kai , Huang Peidong , Shi Guoqi
Published: March 2022

Background. Gastric carcinoma (GC) is a kind of digestive tract tumor that is highly malignant and has a very poor prognosis. Although both Astragalus mongholicus (AM, huáng qí) and Curcuma phaeocaulis Valeton (CPV, é zhú) can slow the onset and progression of GC, the mechanism by which AM-CPV works in the treatment of GC is uncertain. Materials and Methods. The traditional Chinese medicine network databases TCMSP, TCMID, and ETCM were used to identify the key functional components and associated targets of AM and CPV. To establish a theoretical foundation, the development of gastric cancer (GC) was predicted utilizing a GEO gene chip and TCGA difference analysis mixed with network pharmacology. A herbal-ingredient-target network and a core target-signal pathway network were created using GO and KEGG enrichment analyses. The molecular docking method was used to evaluate seventeen main targets and their compounds. Results. Cell activity, reactive oxygen species modification, metabolic regulation, and systemic immune activation may all be involved in the action mechanism of the AM-CPV drug-pair in the treatment of GC. It inhibits the calcium signaling route, the AGE-RAGE signaling system, the cAMP signaling pathway, the PI3K-Akt signaling network, and the MAPK signaling pathway, slowing the progression of GC. The number of inflammatory substances in the tumor microenvironment is reduced, GC cell proliferation is deprived, apoptosis is promoted, and GC progression is retarded through controlling the IL-17 signaling route, TNF signaling pathway, and other inflammation-related pathways. Conclusions. The AM-CPV pharmaceutical combination regulates GC treatment via a multitarget, component, and signal pathway with a cooperative and bidirectional regulatory mechanism. Its active constituents may treat GC by regulating the expression of STAT1, MMP9, IL6, HSP90AA1, JUN, CCL2, IFNG, CXCL8, and other targets, as well as activating or inhibiting immune-inflammatory and cancer signaling pathways.
Digital Twin‐Based Investigation of a Building Collapse Accident
Authors: Zheng Zhe , Liao Wenjie , Lin Jiarui , Zhou Yucheng , Zhang Chi , Lu Xinzheng
Published: March 2022

The collapse of engineering structures can cause significant casualties and have negative social effects. Collapse accident investigation can elucidate the potential causes and mechanisms of the collapse accident, thus remediating future structural collapse and enhancing the resilience. However, there are some obstacles to investigating complicated collapse accidents using conventional methods. For example, the out‐syncs between on‐site investigation and simulation analysis are intractable and can make discovering the cause of collapse accidents difficult. Hence, a digital twin‐based investigation method for collapse accidents was proposed. First, basic virtual digital building models are established using real‐world information. Then, after mapping the data from the real world into the virtual space, the corresponding highly realistic multistage models before and after the building collapse accident are constructed and synchronized. Using the digital twin method, investigators with multidisciplinary knowledge can efficiently integrate, update, and check the models. Finally, the potential collapse mechanism was revealed with the assistance of the corresponding models. To demonstrate the effectiveness of the proposed digital twin‐based investigation method, a real collapse accident investigation is utilized as an example. These results validated our method.
Yellow-Coloured Left Homonymous Visual Hemi-Field after Ischaemic Stroke
Authors: Silimon Norbert , Jung Simon
Published: March 2022

We report a patient’s challenging case who suffered two acute ischaemic strokes, first in the right occipital lobe and later in the right dorsolateral thalamus (with affection of the lateral geniculate nucleus) who developed a yellow-tinted left homonymous visual hemi-field. No previously described case matched our peculiar symptom presentation in combination with the described brain lesions. Especially, the visual phenomena of patients with these brain lesions that were up until now described in literature were complex and vivid visual hallucinations. Here, we discuss possible explanations and mechanisms of this visual phenomenon (acquired hemidyschromatopsia, peduncular hallucinosis, focal epilepsy with visual symptoms, visual hallucinations) and in light of the current literature, we argue that the most likely explanation is a form of simple visual hallucination due to release phenomena (Charles Bonnet syndrome).
Kidney Health for All: Bridging the Gap in Kidney Health Education and Literacy
Authors: Langham Robyn G. , Kalantar-Zadeh Kamyar , Bonner Ann , Balducci Alessandro , Hsiao Li-Li , Kumaraswami Latha A. , Laffin Paul , Liakopoulos Vassilios , Saadi Gamal , Tantisattamo Ekamol , Ulasi Ifeoma , Lui Siu-Fai ,   for the World Kidney Day Joint Steering Committee
Published: March 2022

The high burden of kidney disease, global disparities in kidney care, and poor outcomes of kidney failure bring a concomitant growing burden to persons affected, their families, and carers, and the community at large. Health literacy is the degree to which persons and organizations have or equitably enable individuals to have the ability to find, understand, and use information and services to make informed health-related decisions and actions for themselves and others. Rather than viewing health literacy as a patient deficit, improving health literacy largely rests with health care providers communicating and educating effectively in codesigned partnership with those with kidney disease. For kidney policy makers, health literacy provides the imperative to shift organizations to a culture that places the person at the center of health care. The growing capability of and access to technology provides new opportunities to enhance education and awareness of kidney disease for all stakeholders. Advances in telecommunication, including social media platforms, can be leveraged to enhance persons’ and providers’ education; The World Kidney Day declares 2022 as the year of “Kidney Health for All” to promote global teamwork in advancing strategies in bridging the gap in kidney health education and literacy. Kidney organizations should work toward shifting the patient-deficit health literacy narrative to that of being the responsibility of health care providers and health policy makers. By engaging in and supporting kidney health-centered policy making, community health planning, and health literacy approaches for all, the kidney communities strive to prevent kidney diseases and enable living well with kidney disease.
Short Juvenile Stress Has No Long-Lasting Effects on Anxiety-Like Behavior, Object Recognition Memory, or Gross Brain Morphology but Affects Dendritic Spines in the Hippocampus in Male Rats
Authors: de Melo Silvana Regina , Gremaschi Lucas B. , Blanco Luiz Felipe M.S.B. , Orathes Bárbara M. , Tarosso Isabela V.A. , Bernardi Tuany C.
Published: March 2022

Purpose: During the juvenile stage, such areas as the hippocampus and corpus callosum (CC) are still immature and sensitive to stress exposure. The present study investigated whether two different types of stressors in the juvenile stage of life have a long-lasting impact on behavior and biological outcomes in adult rats. Methods: Male juvenile rats were exposed to restraint or predator stress on postnatal day 25 (P25) for 3 days. Thirty-two days later (P60-74), behavioral and biological analyses were conducted. The behavioral analysis included measures of anxiety-like behavior and recognition memory. The biological analysis investigated gross cerebral morphology, based on volume analysis of the CC and hippocampus, perirhinal cortex thickness, and dendritic spine density. Results: Neither restraint stress nor predator stress affected anxiety-like behavior or object recognition memory in adulthood. Body weight and adrenal gland weight were unaffected by both types of stress. Overall, volumetric measures of the CC and hippocampus were not significant, with no changes in perirhinal cortex thickness. Spine density in the medial prefrontal cortex also was unaffected, but a decrease in dendritic spine density was found in the hippocampus in response to restraint stress and an increase to predator stress. Conclusion: Short-term and daily restraint and predator stress during the juvenile stage had no long-lasting effects on anxiety-like behavior, object memory, volume of the CC or hippocampus, or perirhinal cortex thickness, but a decrease in dendritic spine density was found in the hippocampus. These findings suggest that different types of stressors have different impacts on microstructures in the brain without affecting behavior or the gross morphology of stress-sensitive brain areas.