bluuebunny/crossref_metadata_2025 huggingface dataset:
Genetic diversity, population structure, and DNA fingerprinting of Ailanthus altissima var. erythrocarpa based on EST-SSR markers
Authors: Zhang Manman , Zheng Conghui , Li Jida , Wang Xueyong , Liu Chunpeng , Li Xiangjun , Xu Zhenhua , Du Kejiu
Published: November 2023

Ailanthus altissima var. erythrocarpa is an A. altissima variety with high economic, ecological and ornamental value, but there have been no reports on the development of SSR primers for it. According to the SSR primer information provided by the transcriptome of A. altissima var. erythrocarpa, 120 individuals with different redness levels were used to screen polymorphic primers. Transcriptomic analysis revealed 10,681 SSR loci, of which mononucleotide repeats were dominant (58.3%), followed by dinucleotide and trinucleotide repeats (16.6%, 15.1%) and pentanucleotide repeats (0.2%). Among 140 pairs of randomly selected primers, nineteen pairs of core primers with high polymorphism were obtained. The average number of alleles (Na), average number of effective alleles (Ne), average Shannon’s diversity index (I), average observed heterozygosity (Ho), average expected heterozygosity (He), fixation index (F) and polymorphic information content (PIC) were 11.623, 4.098, 1.626, 0.516, 0.696, 0.232 and 0.671, respectively. Nineteen EST-SSR markers were used to study the genetic diversity and population structure of A. altissima var. erythrocarpa. The phylogenetic tree, PCoA, and structure analysis all divided the tested resources into two categories, clearly showing the genetic variation between individuals. The population showed high genetic diversity, mainly derived from intraspecific variation. Among nineteen pairs of primers, 4 pairs (p33, p15, p46, p92) could effectively distinguish and be used for fingerprinting of the tested materials. This study is of great significance for genetic diversity analysis and molecular-assisted breeding of A. altissima var. erythrocarpa.
Impact of sex and age on vaccine-related side effects and their progression after booster mRNA COVID-19 vaccine
Authors: Mori Masahiko , Yokoyama Aiko , Shichida Ayami , Sasuga Kimiko , Maekawa Takafumi , Moriyama Tadayoshi
Published: November 2023

In mRNA COVID-19 vaccination, side effects after the first and second dose have been well reported. However, studies about side effects after booster vaccine are sparse. 272 healthcare workers who received the third mRNA COVID-19 vaccine were recruited, and impact of sex, age, and symptoms on the side effect progression was statistically analyzed. Females and younger adults had a higher frequencies of general fatigue, headache, joint pain, chills and axillary pain compared to males and elderly adults, respectively. In longitudinal analysis, prolonged time to recovery from side effects was found among females and younger adults. Finally, between the third and second dose vaccinations, 52% of subjects had a longer duration of side effects following the third vaccine compared to the second, and joint pain was the culprit symptom related to the prolonged duration of side effects. Following the second vaccine dose, 25% of subjects had a longer duration of side effects and asthma and ear fullness, which exacerbated the underlying allergic condition, and COVID arm symptom were the culprit symptoms. These highlight the impact of sex, age, and culprit symptoms on the progress of side effects following the booster mRNA COVID-19 vaccine.
Unraveling the strong covariability of tropical cyclone activity between the Bay of Bengal and the South China Sea
Authors: Wu Zeming , Hu Chundi , Lin Lifei , Chen Weizhen , Huang Lixuan , Lin Zijian , Yang Song
Published: November 2023

Herein, we report a strong in-phase covariability of tropical cyclone (TC) activity between the Bay of Bengal (BOB) and the South China Sea (SCS) during October–December of 1979–2019, and which is also the dominant mode of BOB–SCS TC activity, accounting for 35% of the total variances in TC track density. This inter-basin TC covariance is closely linked to the anomalies of tropical sea surface temperature, appearing as the intrinsic Indo-Pacific Tripole mode, which significantly affects the atmospheric circulations overlying the BOB–SCS. Interestingly, this mechanism works via modulating the local TC genesis frequency in the BOB–SCS. However, in terms of the migrated TCs among them, the Indo-Pacific Tripole mainly regulates their genesis location but not their frequency. More importantly, such inter-basin TC covariability still exists significantly even when the TC track data migrating from the SCS into the BOB are excluded. After all, only 19 TCs during the 41 years (1979–2019) are observed to migrate from the SCS to the BOB, which can only contribute slightly to increasing the covariability of BOB–SCS TC-track activity, but do not play a dominant role. Further, the numerical simulations suggest that although both the Indian and Pacific Oceans contribute to the atmospheric anomalies that affect the BOB–SCS TC activity, the Pacific-effect is twice as important.
Quantifying the impact of AI recommendations with explanations on prescription decision making
Authors: Nagendran Myura , Festor Paul , Komorowski Matthieu , Gordon Anthony C. , Faisal Aldo A.
Published: November 2023

The influence of AI recommendations on physician behaviour remains poorly characterised. We assess how clinicians’ decisions may be influenced by additional information more broadly, and how this influence can be modified by either the source of the information (human peers or AI) and the presence or absence of an AI explanation (XAI, here using simple feature importance). We used a modified between-subjects design where intensive care doctors (N = 86) were presented on a computer for each of 16 trials with a patient case and prompted to prescribe continuous values for two drugs. We used a multi-factorial experimental design with four arms, where each clinician experienced all four arms on different subsets of our 24 patients. The four arms were (i) baseline (control), (ii) peer human clinician scenario showing what doses had been prescribed by other doctors, (iii) AI suggestion and (iv) XAI suggestion. We found that additional information (peer, AI or XAI) had a strong influence on prescriptions (significantly for AI, not so for peers) but simple XAI did not have higher influence than AI alone. There was no correlation between attitudes to AI or clinical experience on the AI-supported decisions and nor was there correlation between what doctors self-reported about how useful they found the XAI and whether the XAI actually influenced their prescriptions. Our findings suggest that the marginal impact of simple XAI was low in this setting and we also cast doubt on the utility of self-reports as a valid metric for assessing XAI in clinical experts.
Earlier and more uniform spring green-up linked to lower insect richness and biomass in temperate forests
Authors: Uphus Lars , Uhler Johannes , Tobisch Cynthia , Rojas-Botero Sandra , Lüpke Marvin , Benjamin Caryl , Englmeier Jana , Fricke Ute , Ganuza Cristina , Haensel Maria , Redlich Sarah , Zhang Jie , Müller Jörg , Menzel Annette
Published: November 2023

Urbanization and agricultural intensification are considered the main causes of recent insect decline in temperate Europe, while direct climate warming effects are still ambiguous. Nonetheless, higher temperatures advance spring leaf emergence, which in turn may directly or indirectly affect insects. We therefore investigated how Sentinel-2-derived start of season (SOS) and its spatial variability (SV-SOS) are affected by spring temperature and whether these green-up variables can explain insect biomass and richness across a climate and land-use gradient in southern Germany. We found that the effects of both spring green-up variables on insect biomass and richness differed between land-use types, but were strongest in forests. Here, insect richness and biomass were higher with later green-up (SOS) and higher SV-SOS. In turn, higher spring temperatures advanced SOS, while SV-SOS was lower at warmer sites. We conclude that with a warming climate, insect biomass and richness in forests may be affected negatively due to earlier and more uniform green-up. Promising adaptation strategies should therefore focus on spatial variability in green-up in forests, thus plant species and structural diversity.
Hybrid microstructure of smectite clay gels revealed using neutron and synchrotron X-ray scattering
Authors: Shoaib Mohammad , Khan Shaihroz , Wani Omar B. , Mata Jitendra , Krzysko Anthony J. , Kuzmenko Ivan , Bleuel Markus , Fiddes Lindsey K. , Roth Eric W. , Bobicki Erin R.
Published: November 2023

Aqueous suspensions of swelling clays display a nematic sol-gel transition at very low solid concentrations. The underlying microstructure of the gel has remained a point of contention since the time of Irving Langmuir and has been a major obstacle to fully realizing the potential of clays for practical applications. Here, we comprehensively probe the microstructure of a smectite clay suspension using ultra-small angle neutron/X-ray scattering and find that the nematic gel is structurally ordered and contains entities that are at least an order of magnitude larger than the individual particles. Complementary cryo-electron microscopy shows the presence of domains having particle-particle ordering responsible for nematic texture and regions of particle-particle aggregation responsible for gel-like behavior. We find that the smectic clay gels have a hybrid microstructure with co-existing repulsive nematic domains and attractive disordered domains.
A promising electrochemical sensor based on PVP-induced shape control of a hydrothermally synthesized layered structured vanadium disulfide for the sensitive detection of a sulfamethoxazole antibiotic
Authors: Shi Mingjiao , Shi Peizheng , Yang Xinxin , Zhao Ningbin , Wu Mengfan , Li Jing , Ye Chen , Li He , Jiang Nan , Li Xiufen , Lai Guosong , Xie Wan-Feng , Fu Li , Wang Gang , Zhu Yangguang , Tsai Hsu-Sheng , Lin Cheng-Te
Published: November 2023

Layer-like structured VS2 was fabricated by a PVP-assisted hydrothermal synthesis method, and was modified on glassy carbon electrodes as the SMX sensors. The proposed SMX sensors exhibited a detection limit of 47.0 nM and afforded good recovery results of 97.4–106.8% in the practical analysis.
Mass filtering combined with photochemical derivatization enables high throughput mass spectrometric analysis of unsaturated phosphatidylcholine isomers
Authors: Li Huimin , Xiong Qian , Wu Hao , Zhang Yunmei , Zhuang Ke , Zhao Yan , Zhang Hong , Yi Lunzhao
Published: November 2023

The accurate qualitative and quantitative analysis of PCs and isomers facilitates the discovery of biomarkers for exercise rehabilitation of patients with myocardial infarction.
Trapping of soluble, KCl-stabilized Cu(i) hydrides with CO2 gives crystalline formates
Authors: Grasruck Alexander , Parla Giorgio , Lou Lisha , Langer Jens , Neiß Christian , Herrera Alberto , Frieß Sybille , Görling Andreas , Schmid Günter , Dorta Romano
Published: November 2023

Cu(i)-Hydrido complexes supported by dibenzo[b,f]azepinyl P-alkene hybrid ligands and stabilized by electrostatic interactions in a Cu–H⋯KCl⋯BR3 arrangement can be trapped with CO2 at low temperature to afford Cu(i)-formates.
Water-soluble pillar[6]arene bearing pyrene on alternating methylene bridges for direct spermine sensing
Authors: Ling Li , Zhao Zizhen , Mao Lijun , Wang Shuyi , Ma Da
Published: November 2023

A pyrene-conjugated water-soluble pillar[6]arene is synthesized and used for direct spermine sensing in live cells.
Dual-responsive probe and DNA interstrand crosslink precursor target the unique redox status of cancer cells
Authors: Yu Dehao , Wang Luo , Li Jingao , Zeng Xuanwei , Jia Yuanyuan , Tian Junyu , Campbell Anahit , Sun Huabing , Fan Heli
Published: November 2023

Elevated GSH and H2O2 in some cancer cells is confirmed, and employed for the development of dual-responsive DNA ICL precursor.
Efficient detection of Al3+ and B4O72− over trigonal prism In(iii) complex
Authors: Wang Rui , Jiang Nan , Luo Rong , Yu Hai-Jun , Yin Yi , Bi Shuang-Yu , Zhang Dong-Mei , Shao Feng
Published: November 2023

A novel mononuclear trigonal prism indium(iii) complex, namely, In(H2nha)3 (1) (H3nha = 3-hydroxy-2-napthanoic hydroxamic acid), displaying efficient detection of Al3+ and B4O72− by fluorescence enhancement effect.
Unidirectional asymmetry transmission based on quasi-accidental bound states in the continuum
Authors: Zhang Yingjie , Liu Xingguang , Zhao Rui , Li Junqing
Published: November 2023

The unidirectional asymmetry transmission is demonstrated based on quasi-accidental bound states in the continuum by a one-dimensional chiral photonic crystal slab (CPhCs) composed of tilted silicon nano-pillars.
Ab initio kinetics of the CH3NH + NO2 reaction: formation of nitramines and N-alkyl nitroxides
Authors: Nguyen Loc T. , Mai Tam V.-T. , Vien Huy D. , Nguyen Trang T. , Huynh Lam K.
Published: November 2023

The gas-phase reaction of CH3NH with NO2 is meticulously investigated by quantum chemistry calculation and kinetic modeling to thoroughly understand the potential transformation of CH3NH in the atmosphere.
Anisotropic structure deformation of β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine under high pressure: vibration spectra calculation and resolution based on AIMD simulation
Authors: Huang Yao-Yao , He Zheng-Hua , Ji Guang-Fu
Published: November 2023

The phase transition mechanism of β-HMX under high pressure is studied by AIMD simulation combined with dynamic spectra calculation, and the corresponding relationship between microscopic sturcture and spectral signal is constructed.
Single-molecule scale quantification reveals interactions underlying protein–protein interface: from forces to non-covalent bonds
Authors: Sun Heng , Tian Yichen , Fu Yuna , Lei Yongrong , Wang Yani , Yan Xinrui , Wang Jianhua
Published: November 2023

Using atomic force microscopy-based single-molecule force spectroscopy to quantify noncovalent binding between BAX and Bcl-2, and observing that complicated multivalent binding interactions induced stable BAX/Bcl-2 complexes.
13C pNMR shifts of MOFs based on Cu(ii)-paddlewheel dimers – DFT predictions for spin–1/2 defects
Authors: Fusco Edoardo , Ashbrook Sharon E. , Bühl Michael
Published: November 2023

Spin density of a mixed-valence Cu(ii)Cu(i) paddlewheel dimer (spin-delocalised and -localised structures), a potential candidate for spin–1/2 defects in metal–organic frameworks based on this motif.
Investigation of phase transition, mechanical behavior and lattice thermal conductivity of halogen perovskites using machine learning interatomic potentials
Authors: Shi Yongbo , Chen Yuanyuan , Dong Haikuan , Wang Hao , Qian Ping
Published: November 2023

A clear transition among cubic (α), tetragonal (β) and orthorhombic (γ) phases was observed during the heating and cooling process.
High specific capacity FeFe(CN)6 as the cathode material in aqueous rechargeable zinc–sodium hybrid batteries
Authors: Yang Chaoqiao , Ding Shuang , Zhao Ya , Zhou Jinxia , Li Lin , Fan Jiaxin
Published: November 2023

Zn//FeFe(CN)6 cells display a high discharge capacity of 165.2 mA h g−1, close to the theoretical capacity of 212.2 mA h g−1.
High-loading As single-atom catalysts harvested from wastewater towards efficient and sustainable oxygen reduction
Authors: Luo Yangjun , Wang Yanwei , Zhang Huijuan , Wang Youyuan , Wan Jin , Feng Chuanzhen , Liu Lingmei , Guo Zaiping , Li Jian , Wang Yu
Published: November 2023

We first report universal strategies to synthesize high-loading (up to 13.78 wt%) non-metal monoatoms on carbon. Re-calcination is further proposed to overcome the poor oxidation resistance of catalysts with abundant carbon defects.
Influence of aluminum incorporation and aqueous conditions on metal ion release of high-Ni transition metal oxide nanomaterials
Authors: Hudson Blake G. , Green Curtis M. , Pandiakumar Arun Kumar , Abbaspour Tamijani Ali , Hudson-Smith Natalie V. , Buchman Joseph T. , Koss Meagan , Laudadio Elizabeth D. , Schwartz Michael P. , Klaper Rebecca , Haynes Christy L. , Hamers Robert J. , Mason Sara E.
Published: November 2023

Developing a materials perspective of how to control the degradation and negative impact of complex metal oxides requires an integrated understanding of how these nanomaterials transform in the environment and interact with biological systems.
A critical review on the toxicity regulation and ecological risks of zinc oxide nanoparticles to plants
Authors: Kang Mengen , Liu Yi , Weng Yuzhu , Wang Haoke , Bai Xue
Published: November 2023

This review clarifies the translocation of zinc oxide nanoparticles (ZnO NPs) in plants, reveals the molecular mechanisms of toxicity regulation, and emphasizes the potential risks of composite systems of NPs.
Activating iodine redox by enabling single-atom coordination to dormant nitrogen sites to realize durable zinc–iodine batteries
Authors: Lee Jisung , Lee Wooseok , Back Seungho , Yi Seung Yeop , Lee Seonggyu , Kim Seongseop , Moon Joonhee , Koh Dong-Yeun , Kim Kyeounghak , Back Seoin , Lee Jinwoo
Published: November 2023

The introduction of a single Ni atom into an inactive N-doped carbon matrix, through its role as an electrocatalyst, awakens the dormant N sites, significantly suppressing the polyiodide shuttle effect and enhancing iodine redox kinetics.
Insects as a sustainable source of emerging proteins and their processing to obtain bioactive compounds: an updated review
Authors: de Matos Francielle Miranda , Rasera Gabriela Boscariol , de Castro Ruann Janser Soares
Published: November 2023

Insect proteins can serve as a substrate for the production of peptides with a wide range of bioactive properties.
Optically active defects in carbon nanotubes via chlorination: computational insights
Authors: Weight Braden M. , Gifford Brendan J. , Tiffany Grace , Henderson Elva , Mihaylov Deyan , Kilin Dmitri , Kilina Svetlana
Published: November 2023

The effect of chlorination on the electronic structure and optical spectra of (6,2) carbon nanotubes is studied computationally, revealing optically active defect-related states when chlorines are placed close to each other at a dilute concentration.
Castor oil-derived polyurethane networks multiple recyclability based on reversible dynamic acetal bond
Authors: Taher Muhammad Abu , Su Yi , Wang Xiaolin , Xu Xiaobo , Habib Md Ahsan , Zhu Jin , Chen Jing
Published: November 2023

Making polyurethanes (PUs) from castor oil (CO) is severely constrained because they cannot be recycled due to the irreversibly cross-linked structure.
Preparation of an ultra-low profile and high peel strength copper foil with rice-grain microstructures
Authors: Wang Lijuan , Fa Xiaowei , Tang Yunzhi , Liao Juan , Tan Yuhui , Song Ning , Huang Jian , Sun Zhen , Zhao Men , Liu Weifei , Zhao Man
Published: November 2023

Rice-grain copper nanoparticles of 420 nm diameter was obtained after micro-coarsening treatment, resulting in a 52% increase in copper foil surface area and a 10-fold increase in peel strength.
Efficient perovskite oxide@CdS composite catalysts for hydrogen production from oilfield wastewater electrolysis
Authors: Cao Jianzhao , Li Rui , Qi Ying , Qi Zhaoxiang , Huang Junzi , Xie Yahong
Published: November 2023

SCF@CdS composite electrocatalysts with a core–shell structure were successfully synthesized using a simple in situ co-precipitation method. These composite catalysts showed superior electrocatalytic activity in both 1 M KOH and oilfield wastewater.
Liquid marbles: review of recent progress in physical properties, formation techniques, and lab-in-a-marble applications in microreactors and biosensors
Authors: Tenjimbayashi Mizuki , Mouterde Timothée , Roy Pritam Kumar , Uto Koichiro
Published: November 2023

This review summarises the fundamental properties of liquid marbles, the recent advances in the concept of liquid marbles, physical properties, formation methods, liquid marble-templated material design, and biochemical applications.
Fe doping and interface engineering-induced dual electronic regulation of CoSe2/Co9S8 nanorod arrays for enhanced electrochemical oxygen evolution
Authors: Zhou Guangyao , Wei Chao , Li Zhijuan , He Bin , Liu Zhenyuan , Li Jing
Published: November 2023

Double electronic modification by Fe doping and interface engineering boosts the OER performance of Fe-doped CoSe2/Co9S8 nanorod arrays.
Na10Zn(NO3)4(SO3S)4: a nonlinear optical crystal combining inorganic π-conjugated and non-π-conjugated heteroanion groups
Authors: Yu Zihao , Ding Qingran , Jiang Yuhang , Huang Weiqi , Yang Changsheng , Zhao Sangen , Luo Junhua
Published: November 2023

Combining non-π-conjugated heteroanionic groups and π-conjugated groups is an effective strategy for obtaining crystals with excellent optical properties.
Computational-fitting method for mobility extraction in GaN HEMT
Authors: Chang Kuan-Chang , Feng Xibei , Liu Huangbai , Liu Kai , Lin Xinnan , Li Lei
Published: November 2023

A computational fitting method, where RSD is related to overdrive-voltage, is demonstrated for determining mobility in GaN HEMT.
Stereoselective RNA reaction with chiral 2′-OH acylating agents
Authors: Shioi Ryuta , Xiao Lu , Chatterjee Sayantan , Kool Eric T.
Published: November 2023

The 2′-OH groups of RNA are shown to react differentially with opposite enantiomers of chiral acylating agents, with applications in conjugation and mapping of the biomolecule.
UiO-66(-NH2) crystal-decorated Cu7S4 snowflake-like nanoarchitectures with synergistic charge migration for enhanced photocatalytic H2 evolution and N2 fixation
Authors: Bariki Ranjit , Pati Aditya Ranjan , Pradhan Sibun Kumar , Panda Saumyaranjan , Nayak Swagat Kumar , Mishra B. G.
Published: November 2023

The fabrication of template-free dendritic copper sulphide phase-coupled metal–organic framework (MOF) heterostructures is an innovative approach for boosting light harvesting property and efficacy towards the photoreduction of atmospheric molecules.
Role of confinement in the shear banding and shear jamming in noncolloidal fiber suspensions
Authors: Li Benke , You Wei , Liu Sijun , Peng Li , Huang Xianbo , Yu Wei
Published: November 2023

The role of confinement in the shear banding and shear jamming effect is critical in processing short fiber-reinforced thermoplastics (FRTs).
Synergy of strong/weak interface adhesion forces and Li2S additive enabling high performance full anode-free lithium–metal batteries
Authors: Fang Zejian , Ding Shukai , Du Gaohui , Zhu Yong , Serra Christophe A. , Xu Bingshe , Su Qingmei , Suo Guoquan , Wang Wei
Published: November 2023

A polymeric SEI is fabricated by blending PVDF and polar crosslinked tri-propylene glycol diacrylate nanoparticles for constructing high-performance anode-free lithium metal batteries.
Achieving heat-resistant energetic compounds via silver-catalyzed one-pot cycloaddition of ethyl 2-isocyanoacetate and nitrogen-rich diazonium
Authors: Dong Yaqun , Li Miao , Cheng Guangbin , Huang Wei , Liu Yuji , Xiao Chuan , Tang Yongxing
Published: November 2023

An efficient strategy of constructing nitrogen-rich 1,2,4-triazole bridged compounds via silver-catalyzed one-pot cycloaddition has been developed, which resulted in the formation of promising heat-resistant materials.
Homonuclear multi-atom catalysts for CO2 electroreduction: a comparison density functional theory study with their single-atom counterparts
Authors: Xiao Jingjing , Liu Ziyang , Wang Xinshuang , Li Fengyu , Zhao Zhonglong
Published: November 2023

Multi-nuclear reaction centers on homonuclear multi-atom catalysts are designed to boost the CO2RR, outperforming their single-atom counterparts.
Perceptions of Adults With Hearing Loss About the Communication Difficulties Generated by the COVID-19 Preventive Measures: A Qualitative Study
Authors: Chauvette Loonan , Pinsonnault-Skvarenina Alexis , Sharp Andréanne , Gagné Jean-Pierre , Lacerda Adriana Bender Moreira , Hotton Mathieu
Published: November 2023

Purpose:

The COVID-19 pandemic led to the implementation of preventive measures that exacerbated communication difficulties for individuals with hearing loss. This study aims to explore the perception of adults with hearing loss about the communication difficulties caused by the preventive measures and about their experiences with communication 1 year after the adoption of these preventive measures.

Method:

Individual semistructured interviews were conducted via videoconference with six adults who have hearing loss from the province of Québec, Canada. Data were examined using qualitative content analysis.

Results:

The study found that face masks and in-person work (i.e., in opposition to remote work) were important barriers to communication because of hindered lipreading and competing noise in many workplaces. In contrast, preventive measures that allowed visual information transmission (e.g., transparent face masks, fixed plastic partitions) were considered favorable for communication. Communication partners were perceived as playing an important role in communication success with preventive measures: Familiar communication partners improved communication, whereas those with poor attitude or strategies hindered communication. Participants found that videoconferences could provide satisfactory communication but were sometimes hindered by issues such as bad audiovisual quality or too many participants.

Conclusions:

This study identified reduced access to speech reading and lack of general awareness about hearing issues as key barriers to communication during the pandemic. The decreased communication capabilities were perceived to be most problematic at work and during health appointments, and tended to cause frustration, anxiety, self-esteem issues, and social isolation. Suggestions are outlined for current and future public health measures to better consider the experience of people with hearing loss.
Low‐computation‐burden model predictive current control for the grid‐tied quasi‐Z‐source inverter
Authors: Liu Qinghua , Zhang Jinliang , Kang Longyun , Duan Xinwei
Published: November 2023

The appealing design known as the quasi‐Z‐source inverter (qZSI) can function in both buck and boost modes. In the meantime, model predictive control (MPC) for power transformers has attracted a lot of interest. In order to improve performance and solve the shortcomings of the current MPC, this paper suggests a low‐computation‐burden model predictive current control (LCB‐MPCC) for the grid‐tied qZSI. Two active vectors, one zero vector, and one shoot‐through (ST) vector are used in the production of the output voltage. To get around the weighting factor, a modified sliding‐mode control technique is suggested for instantly controlling the inductor current and capacitor voltage to their regulating spots. The duty cycle of the ST vector is acquired by the dead‐beat control to restrict the inductor current and significantly reduce the inductor current ripple. Additionally, an effective and quick optimal sector selection strategy is provided that uses a look‐up table to pick the optimal sector rather than a number of intricate calculations. Therefore, the proposed LCB‐MPCC greatly reduces the computational burden. To demonstrate the efficacy and benefits of the suggested technique, simulation and experimental results are presented.
Constraining the top-light initial mass function in the extended ultraviolet disk of M 83
Authors: Rautio R. P. V. , Watkins A. E. , Salo H. , Venhola A. , Knapen J. H. , Comerón S.
Published: November 2023

Context. The universality or non-universality of the initial mass function (IMF) has significant implications for determining star formation rates and star formation histories from photometric properties of stellar populations.

Aims. We reexamine whether the IMF is deficient in high-mass stars (top-light) in the low-density environment of the outer disk of M 83 and constrain the shape of the IMF therein.

Methods. Using archival Galaxy Evolution Explorer (GALEX) far ultraviolet (FUV) and near ultraviolet (NUV) data and new deep OmegaCAM narrowband Hα imaging, we constructed a catalog of FUV-selected objects in the outer disk of M 83. We counted Hα-bright clusters and clusters that are blue in FUV−NUV in the catalog, measured the maximum flux ratio FHα/fλFUV among the clusters, and measured the total flux ratio ΣFHα/ΣfλFUV over the catalog. We then compared these measurements to predictions from stellar population synthesis models made with a standard Salpeter IMF, truncated IMFs, and steep IMFs. We also investigated the effect of varying the assumed internal extinction on our results.

Results. We are not able to reproduce our observations with models using the standard Salpeter IMF or the truncated IMFs. It is only when assuming an average internal extinction of 0.10 < AV < 0.15 in the outer disk stellar clusters that models with steep IMFs (α > 3.1) simultaneously reproduce the observed cluster counts, the maximum observed FHα/fλFUV, and the observed ΣFHα/ΣfλFUV.

Conclusions. Our results support a non-universal IMF that is deficient in high-mass stars in low-density environments.
Dairy robotic milking system
Authors: Zagidullin L.R. , Khisamov R.R. , Kayumov R.R. , Shaidullin R.R. , Zinnatov F.F. , Sadykov N.F.
Published: November 2023

The article presents the results of studying the technology of robotic milking in the aspect of digitalization of dairy cattle breeding. The relevance of the topic lies in the fact that in Russia the task is to introduce the technology of “precise” animal husbandry based on digital technologies. It is noted that in our country there are successfully functioning dairy complexes, where digital technology tools, including robotics, have been introduced. The technologies for identifying animals, determining the quality of milk, controlling the robotic complex and the milking process are described. The robotic milking system is a progressive technology in terms of the use of digital technology elements: big data, the Internet of things, artificial intelligence. It is necessary to take into account the experience of these farms in order to increase the efficiency of introducing innovations.
The working organ of the cultivator KPS – 4 with a needle disk for weed control
Authors: Nekhoroshev N.D. , Arinushkin A.P. , Nekhoroshev D.A. , Nekhoroshev D.D. , Polikarpova T.A. , Matasov A.N.
Published: November 2023

Weed control is an important technological operation in the cultivation of all types of agricultural crops, especially row crops, vegetables and grains. Since weeds have an increased ability to grow and develop at low temperatures in early agrotechnical terms. Then the fight against them in the preparation of the soil before sowing is a necessary condition for maintaining moisture and obtaining consistently high crop yields. When carrying out agrotechnical measures aimed at weed control, cultivators for continuous tillage are used, which are used for tillage before sowing and when caring for fallows. But when cultivating, the cut weeds overhang on the rack of the working body of the cultivator. This violates the agrotechnical requirements for tillage and reduces the productivity of the unit during cultivation. To eliminate these shortcomings, a device has been developed that provides protection for the cultivator leg rack from overhanging cut weeds during cultivation. The created working body can be installed on the existing frame structure of the steam cultivator without its modification. The operation of a steam cultivator with an improved working body allows you to increase the productivity of work on cultivation by 15%.
The use of non-traditional raw materials in the production of bakery products
Authors: Prokopenko O.O. , Efremova E.N. , Zenina E.A. , Chapko D.V.
Published: November 2023

To expand the range, in our study we used flour from spelled and spelled grains. Spelled and spelled refers to an ancient type of wheat. The grain contains amino acids, a large amount of protein and dietary fiber. The purpose of the work: to study the effect of spelled flour and evaluate the economic effect of their introduction into production. The organoleptic and physicochemical parameters were carried out according to the specifications 10.71.11-046-38826547-2016. Trial baking was carried out on the basis of the Volgograd State Agrarian University at the Department of Processing Technologies and Food Security. According to organoleptic indicators, Kruassan made from Gremme spelled flour of the 1st grade met all technical requirements. The appearance of the spelled croissant was blurry, the color was brown, the taste was “nut flavor”, more sweet. A sample of products made from Gremme spelled flour of the 1st grade met the technical specifications of TU 10.71.11-046-38826547-2016. The moisture content of the product was 37.0%, the acidity was 2.8 degrees, with the addition of spelled flour, the content of potassium and magnesium macronutrients increases. The profitability of the production of croissants with spelled flour was 44%, this indicator was higher by 2% of products made from spelled flour.
The study of edible vegetable oils rheological properties
Authors: Ostrikov Alexander Nikolaevich , Kleymenova Natalia Leonidovna , Bolgova Inessa Nikolaevna , Kopylov Maxim Vasilyevich , Lobacheva Natalia Nikolaevna
Published: November 2023

The study of technological media rheological properties in the food industry is of primary importance for innovative food products development. This kind of research results can be recommended for reconstructing the suspensions, solutions, and mixtures properties and behavior. The objects of testing are the following types of edible vegetable oils: sunflower, mustard, linseed, camelina, rapeseed, milk thistle. The aim is to determine the rheological properties of the studied oils and to find out their dependence on temperature. Tests at shear rates γ = 100 ÷ 1000 s-1 in the temperature range of 20 - 120°C were carried out in this work. The viscosity was determined with the Brookfield DV-II + PRO viscometer. The data analysis showed that the dynamic coefficient for the studied samples of oils changed insignificantly in the range of the shear rate values γ = 600 ÷ 800 s-1. This can be explained by the structure strengthening due to the formation of additional intermolecular bonds. The nature of the rheological curves was established. The data obtained are recommended for use in the implementation of methods of hydromechanical and thermal processes intensification in the studied oils obtaining.
Small universal unit for preparing, transporting and distributing liquid feed in small pig farms
Authors: Rakhimov O.D. , Manzarov Y.Kh. , Azizov Sh.L. , Turdiev Sh.Sh. , Chorshanbiyev Z.E.
Published: November 2023

The article focuses on the advantage of liquid mixed feeds in the use of mixed feeds for small farms and farms. The analysis of the scientific research works devoted to the problems of transportation and distribution of liquid mixed feed using pipelines showed that the physical and mechanical and rheological properties of such feeds have not been fully studied, and special feed pumps designed for the transfer of liquid mixed feeds with high viscosity have not been created. The article describes the structure and principle of operation of the small-sized liquid mixed feed preparation, transfer and distribution unit created by the authors. All equipment included in the unit has been modernized considering the peculiarities of small farms. Based on the results of the study, the necessary conclusions were drawn.
Results of an experiment on the use of bioproducts for soybean cultivation under the conditions of Primorsky kray
Authors: Syrmolot Oksana , Telichko Ol’ga , Belova Tat’yana , Lastushkina Elena
Published: November 2023

The paper presents the results of a study on the influence of bioproducts on soybean plants under the conditions of Primorsky kray. The research was carried out as a microplot experiment in 2020-2022. Bioproducts and soybean variety Primorskaya 86 served as the research object. The highest biological efficacy against Septoria blight (21.4%) was detected in the variant with a complex treatment with bioproduct Gamair. All of the studied bioproducts were equally effective against downy mildew (32 %). The bioproducts increased plant density and preservation until harvest. The highest plant density was observed in the variant with seed treatment and foliage spraying with Baktofit (60.3 plants/m2). The highest degree of preservation was detected after seed treatment with Biocomposite-correct (93.2 plants/m2). The plant height in the experimental variants exceeded the standard by 9.3-16.8 cm. A tendency for the growth of soybean herbage and roots was observed in the variant with a complex treament with Biocomposite-correct, which exceeded the control by 29.4 and 28.9%, respectively. The TKW increased by 10.1-26.0 % after treatment with the studied bioproducts. The seed weight per plant was by 10.5-51.1% higher in the experimental variants than in the control. Using the bioproducts allowed a significant gain in yield from 0.4 to 1.3 t/ha. The highest yield (3.8 t/ha) was observed in the variants with the treatment of seeds with Biocomposite-correct and the seed treatment with any bioproduct followed by subsequent spraying of foliage during the growing period with the same bioproduct.
Accumulation of heavy metals in the soil and agricultural crops
Authors: Uzakov Zafar , Uzakov Zair
Published: November 2023

This article presents the results of studies of the accumulation of heavy metals in irrigated soils and crops grown in fields contaminated with heavy metals in a territory that has not previously been studied and its ecological state has not been assessed. The accumulation of heavy metals in irrigated soils and crops Panicum L-millet, Solanum lycopersicum - tomato, Citrullus lanatus - watermelon, Cucumis melo - melon, Capsicum annuum - bell pepper was determined. Based on the amount of accumulated elements of heavy metals Cr, Ni, Cd, Pb, Mn, Cu, As in soil and crops, an assessment of their ecological state was carried out. The following accumulation of heavy metals in soil incisions is established: the cadmium (Cd) element accumulates in a small amount, lead (Pb) - 15.2 mg/kg, nickel (Ni) - 34.2 mg/kg, chromium (Cr) - 43.3 mg/kg. From agricultural crops in the ears of millet manganese (Mn) accumulates in the amount of 12.63 mg/kg, copper (Cu) - 9.79 mg/kg, cadmium (Cd) - 0.068 mg/kg, lead (Pb) - 0.48 mg/kg, chromium (Cr) - 0.99 mg/kg, nickel (Ni) -2.92 mg/kg, arsenic (As) - 0.98 mg/kg; from vegetable and melon crops in the fruit of bell pepper cadmium (Cd) is contained in an amount of 0.077 mg/kg, lead (Pb) - 0.35 mg/kg, nickel (Ni) - 3.26 mg/kg, arsenic (As) -5.33 mg/kg. Since the content of heavy metal elements Ni, Cr, Cd and As in the studied crops exceed the maximum allowable concentrations, it is not recommended to grow vegetables and melons in such fields.
Ensuring food safety in Uzbekistan and its forecasting
Authors: Fayziyeva Shirin , Samiyiva Gulnoza , Yuldosheve Shakhribonu
Published: November 2023

In this sciеntific аrticlе, using еcоnоmic аnd mаthеmаticаl mеthоds, fооd sаfеty issuеs in оur cоuntry, еcоnоmеtric аnаlysis оf fооd sаfеty, аnаlysis оf prоspеctivе indicаtоrs, аnd thе dеgrее оf dеpеndеncе оf cоmplеx sоciо-еcоnоmic phеnоmеnа аrе studiеd. Bаsеd оn thе аnаlysis оf thе prоcеss оf еnsuring fооd sеcurity in оur cоuntry, using thе mеthоds оf cоrrеlаtiоn аnd rеgrеssiоn аnаlysis, thе dirеctiоns оf аctivitiеs аimеd аt dеtеrmining thе strеngth оf thе rеlаtiоnship bеtwееn fаctоrs аnd incrеаsing thе еffеctivеnеss оf thе fооd prоgrаm in оur rеpublic аrе rеflеctеd.
The use of smart systems in cotton irrigation as a way of water saving in the climatic conditions of the Dashoguz province
Authors: Orazgylyjov Batyr , Dowletov Hemra , Balyshev Tirkesh , Rejepov Eziz , Hamydov Rahat
Published: November 2023

Today, Turkmenistan, as a developing country, has great opportunities to meet the needs in all sectors of the economy. The development of agriculture and increase in productivity using modern “Smart” systems is one of the priorities of the State policy of the country. Scientific work on the study of the effectiveness of the use of the sprinkling method in the process of cotton growth was carried out in the scientific and practical site of the Turkmen Agricultural Institute, where cotton was planted in two sites of 1 hectare. The results showed that when using the sprinkling method, cotton germination averaged 92.2% over three years, while in conventional irrigation this figure was 90.2%, the average yield was 43.5 c/ha, and in conventional irrigation this the same indicator was equal to 30.5 c/ha, also the average water consumption was 3472.5 m3, the same indicator in ordinary irrigation became equal to 7000m3, water savings amounted to 3527.5 m3, which in turn proves the effectiveness of using the sprinkling method to obtain a high yield in climatic conditions of the Dashoguz province.
Cotton drip irrigation using magnetic technology
Authors: Ergashova D.T. , Kasymbetova S.A. , Matyakubov B.Sh.
Published: November 2023

The article presents the results of scientific research on the use of magnetic technologies for water magnetization and their use in agriculture. On the beneficial effects of magnetic water on the rate of plant growth, the construction of the root system, and the potential for strong plants in the future. The research results proved that soaking seeds and watering with magnetized water lead to an increase in crop yields with a simultaneous decrease in the specific water consumption for irrigation by 1.5-2.0 times. The article also shows the results of field studies conducted at the site where the drip method of irrigation of cotton has been introduced using water for irrigation that has passed through a magnetic device. The magnetic apparatus used to magnetize the water in the experimental area is described, along with its design and working principal. Field research was done on meadow - serozem soils in the Kuyichirchik area of the Tashkent region to examine the impact of magnetic water on the growth, development, and increase in yield of cotton while conserving irrigation water. The outcomes show a favorable impact on the growth, development, and increase in cotton output. At the same time, water savings amounted to 10-20 percentage compared to irrigation with ordinary water.
Assessment of the natural resource potential of the territory: Opportunities and prospects for use
Authors: Ermakova Anna
Published: November 2023

The article considers the natural resource potential of the south of the Tyumen region. The features of sapropel deposits, their useful properties and the possibility of application in various sectors of the economy are revealed. The use of sapropel deposits will have a beneficial effect on the development of the territory.
A uniqueness result for a non-strictly convex problem in the calculus of variations
Authors: Lledos B.
Published: November 2023

We prove the uniqueness of the solution for a non-strictly convex problem in the Calculus of Variations of the form ∫φ(∇v) − λv. Here, φ is a convex function not differentiable at the origin and λ is a Lipschitz function. To prove this result, we show that under fairly general assumptions the minimizers are globally Lipschitz continuous.
Research and Selection of Sorbents for Volatile Organic Compounds (VOC) Sampling Tubes
Authors: Hu Junyann , Wu Jinna , Yao Qian , Wang Chong , Li Lixuan , Li Chuanjie
Published: November 2023

Volatile organic compounds (VOCs) are common emitting substances in vehicle interior parts and materials, with a wide range of boiling points (50-250°C) and a polarity range ranging from medium to non-polar, at least 200 species. Currently, VOC sampling mainly uses Tenax TA sorbent for collection, which has good stability and is suitable for weakly polar to non-polar substances between C6-C16. But there are many types of VOC substances, and each substance has its unique characteristics. Tenax TA is not suitable for all substances, and it is not the best sorbent choice for substances with medium polarity or low carbon number. In recent years, the vehicle and indoor environmental standards are open to the selection of sorbent, no longer limiting the type of sorbent sorbent, and more sampling tubes mixed with different sorbent types have emerged to achieve the best sampling results. After summarizing the common emitted substances in the car, this article selects 6 common types of sorbents or mixed sorbents for substance collection, and searches for the optimal sorbent type for each substance.
Reaction behavior of high manganese and high aluminum steel with chromium-containing ladle filler sand
Authors: Kong Lingzhong , Kang Ming , Zang Ximin , Li Shisen , Yang Jie
Published: November 2023

In order to understand the reaction mechanism of high manganese and high aluminum steel with ladle filler sand and improve the ladle free-opening rate, some laboratory experiments were carried out. The effect of [Mn] and [Al] contents in the steel and reaction time on the interfacial reaction of steel-sand were considered. The reaction mechanism between the steel and filler sand is as follows. Firstly, [Mn], [Fe]and [Al] in steel react with SiO2 in filler sand to form a liquid phase dominated by MnO-Al2O3-SiO2-FeO. With the progress of the reaction, [Mn] and [Al] gradually reduce FeO, which leads to some metallic Fe being generated. Secondly, the liquid phase is further expanded, and solid phase (chromite phase) is dissolved into the liquid. At the same time, the Cr2O3 in the liquid phase is reduced by [Al] in the steel. Finally, the liquid phase flows down by the gaps because of gravity, forming a sintered layer. In addition, both [Mn] and [Al] in steel can increase the liquid phase of filler sand, because the MnO and Al2O3 of reaction products will lower the liquidous temperature, thus aggravating the sintering of filler sand.
Psychologisch geleitete Gruppentreffen für Angehörige
von ALS-Patient*innen
Authors: Aust Elisa , Günther René , Hermann Andreas , Linse Katharina
Published: November 2023

Hintergrund Der Verlauf der Amyotrophen Lateralsklerose (ALS) konfrontiert
die Betroffenen selbst, aber auch ihre An- und Zugehörigen nicht nur mit
zunehmenden körperlichen Einschränkungen, sondern auch mit
psychosozialen sowie sozialmedizinisch-organisatorischen Belastungen. Die
Angehörigen sind häufig eng in die Pflege und Betreuung
involviert und selbst hoch belastet, spezifische Angebote zu ihrer Entlastung
werden seit längerem empfohlen. Ziel dieser Studie war die Evaluation
der Umsetzbarkeit und Akzeptanz von psychologisch geleiteten supportiven
Angehörigentreffen in einer ALS-Spezialambulanz.

Methoden Die themenoffenen Gruppentreffen fanden ca. alle drei Monate
statt. Über einen Zeitraum von gut zwei Jahren wurden von insgesamt 26
Angehörigen von ALS-Patient*innen Daten zur subjektiven Relevanz
der Inhalte der Treffen, ihrer Nützlichkeit und eventuelle Kritik
erhoben.

Ergebnisse In den Angehörigentreffen wurden sowohl
praktisch-organisatorische Belange besprochen als auch psychosoziale Themen, zum
Beispiel Selbstfürsorge, der Umgang mit Emotionen sowie der Umgang bzw.
Konflikte mit den Erkrankten sowie Dritten. Die Treffen wurden
überwiegend als hilfreich, verständlich und persönlich
relevant bewertet und der Austausch in einer
„Schicksalsgemeinschaft“ als sehr entlastend wahrgenommen.

Diskussion Die ALS-Angehörigentreffen waren im beschriebenen
Format gut durchführbar und wurden gut angenommen. Angebote wie das hier
berichtete bieten soziale, emotionale und praktische Unterstützung und
sind damit geeignet, um die hoch belasteten Angehörigen von
ALS-Patient*innen zu entlasten. Die quantitative
Überprüfung ihrer Wirksamkeit ist aufgrund der
Komplexität der Lebenssituation sowie methodisch herausfordernd.
Aufgrund des geringen Aufwandes der Implementierung sollten psychosoziale
Unterstützungsangebote für Angehörige ein Bestandteil
der Regelversorgung bei ALS sein, im Sinne eines multidimensionalen
Versorgungskonzeptes mit palliativem Leitbild.