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Understanding the oxidation chemistry of Ti_(3)C_(2)T_(x)(MXene)sheets and their catalytic performances

Journal of Energy Chemistry 2024年第1期88卷 437-445,I0010页

作者： Suvdanchimeg Sunderiya Selengesuren Suragtkhuu Solongo Purevdorj Tumentsereg Ochirkhuyag Munkhjargal bat-Erdene Purevlkham Myagmarsereejid Ashley DSlattery Abdulaziz SRbati Joseph GShapter Dorj Odkhuu Sarangerel Davaasambuu Munkhbayar batmunkh Department of Chemistry Division of Natural SciencesSchool of Arts and SciencesNational University of MongoliaUlaanbaatar 14200Mongolia Queensland Micro-and Nanotechnology Centre School of Environment and ScienceGriffith UniversityNathan campusBrisbaneQueensland 4111Australia Department of Physics Incheon National UniversityIncheon 22012Republic of Korea Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt LuciaBrisbaneQueensland 4072Australia Adelaide Microscopy The University of AdelaideAdelaideSouth Australia 5005Australia Centre for Organic Photonics&Electronics School of Chemistry and Molecular BiosciencesThe University of QueenslandSt LuciaBrisbaneQueensland 4072Australia

Transition metal carbides and nitrides(MXenes)nanosheets are attractive two-dimensional(2D)materials,but they suffer from oxidation/degradation issues during storage and/or applications due to their sensitivity to water and *** the great research progress,the exact oxidation kinetics of Ti_(3)C_(2)T_(x)(MXene)and their final products after oxidation are not fully ***,we systematically tracked the oxidation process of few-layer Ti_(3)C_(2)T_(x) nanosheets in an aqueous solution at room temperature over several *** also studied the oxidation effects on the electrocatalytic properties of Ti_(3)C_(2)T_(x) for hydrogen evolution reaction and found that the overpotential to achieve a current density of 10 mA cm^(-2)increases from 0.435 to 0.877 V after three weeks of degradation,followed by improvement to stabilized values of around 0.40 V after eight *** results suggest that severely oxidized MXene could be a promising candidate for designing efficient *** to our detailed experimental characterization and theoretical calculations,unlike previous studies,black titanium oxide is formed as the final product in addition to white Ti(IV)oxide and disordered carbons after the complete oxidation of Ti_(3)C_(2)T_(x).This work presents significant advancements in better understanding of 2D Ti_(3)C_(2)T_(x)(MXene)oxidation and enhances the prospects of this material for various applications.

关键词： 2D materials MXene Chemical degradation Catalysis Hydrogen evolution reaction

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新疆卫拉特蒙古民间长调歌中的汉语借词初探

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西部蒙古论坛 2024年第1期 77-84,M0005页

作者：策·巴图新疆大学历史学院新疆乌鲁木齐830046

新疆卫拉特蒙古古老的长调歌中频繁出现一些汉语借词,笔者在搜集整理并辨别这些借词的基础上,在对其进行内容分类,进而从语音学、形态学、语义学角度进行分析,探讨其特点,目的在于对蒙古语汉语借词研究提供参考,对新疆卫拉特蒙古历来就... 详细信息

新疆卫拉特蒙古古老的长调歌中频繁出现一些汉语借词,笔者在搜集整理并辨别这些借词的基础上,在对其进行内容分类,进而从语音学、形态学、语义学角度进行分析,探讨其特点,目的在于对蒙古语汉语借词研究提供参考,对新疆卫拉特蒙古历来就学习和使用汉语的事实提供依据。

关键词：卫拉特民间长调歌汉语借词研究

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基于RoBERTa多特征融合的棉花病虫害命名实体识别

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河南农业科学 2024年第2期53卷 152-161页

作者：李东亚白涛香慧敏戴硕王震鲁陈珍新疆农业大学计算机与信息工程学院新疆乌鲁木齐830052 智能农业教育部工程研究中心新疆乌鲁木齐830052 新疆农业信息化工程技术研究中心新疆乌鲁木齐830052 新疆科信职业技术学院新疆乌鲁木齐830049

针对棉花病虫害文本语料数据匮乏且缺少中文命名实体识别语料库,棉花病虫害实体内容复杂、类型多样且分布不均等问题,构建了包含11种类别的棉花病虫害中文实体识别语料库CDIPNER,提出了一种基于RoBERTa多特征融合的命名实体识别模型。... 详细信息

针对棉花病虫害文本语料数据匮乏且缺少中文命名实体识别语料库,棉花病虫害实体内容复杂、类型多样且分布不均等问题,构建了包含11种类别的棉花病虫害中文实体识别语料库CDIPNER,提出了一种基于RoBERTa多特征融合的命名实体识别模型。该模型采用掩码学习能力更强的RoBERTa预训练模型进行字符级嵌入向量转换,通过BiLSTM和IDCNN模型联合抽取特征向量,分别捕捉文本的时序和空间特征,使用多头自注意力机制将抽取的特征向量进行融合,最后利用CRF算法生成预测序列。结果表明,该模型对于棉花病虫害文本中命名实体的识别精确率为96.60%,召回率为95.76%,F1值为96.18%;在ResumeNER等公开数据集上也有较好的效果。表明该模型能有效地识别棉花病虫害命名实体且具有一定的泛化能力。

关键词：棉花病虫害 RoBERTa模型命名实体识别多特征融合多头注意力机制

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Effects of cloud,atmospheric water vapor,and dust on photosynthetically active radiation and total solar radiation in a Mongolian grassland

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Journal of Arid Land 2012年第4期4卷 349-356页

作者： Tserenpurev bat-OYUN Masato SHINODA Mitsuru TSUBOn Meiji University Tokyo168-8555Japa Arid Land Research Center Tottori UniversityTottori 680-0001Japan

Photosynthetically active radiation （PAR） is an important input parameter for estimating plant produc- tivity due to its key role in the growth and development of plants. However, a worldwide routine network for sys- tematic PAR measurements is not yet established, and PAR is often calculated as a constant fraction of total solar radiation （SR）. Although the ratio of PAR to SR （PAR/SR） has been reported from many places, few studies have been performed for dry regions. The present study was therefore carried out in an arid region of Mongolia to obtain PAP-JSR and examine its dependency on sky clearness （the clearness index）, water vapor in the atmosphere and aeolian dust. Continuous measurements of PAR and SR were taken every one second using quantum and pyranometer sensors, respectively, and the readings were averaged and recorded at intervals of 30 minutes for a period of 12 months. The lowest monthly mean daily PAR/SR occurred in April （0.420）, while the highest ratio was observed in July （0.459）. Mean daily PAR/SR during plant growing season （May-August） was estimated to be 0.442, which could be useful for modeling plant productivity in the study area. The annual mean daily PAR/SR （0.435） was lower than the values reported in many previous studies. This difference could be explained with the regional variation in climate： i.e. drier climatic condition in the study area. PAR/SR was negatively correlated with the clearness index （r= -0.36, P〈0.001）, but positively with atmospheric water vapor pressure （r=0.47, P〈0.001）. The average PAR/SR was significantly lower （P=0.02） on the dusty days compared to the non-dust days. Water vapor in the atmosphere was shown to be the strongest factor in the variation of PAR/SR. This is the first study examining PAR/SR under a semi-arid condition in Mongolia.

关键词： clearness index dust storm photosynthetically active radiation total solar radiation water vapor pressure

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Effects of grazing and precipitation variability on vegetation dynamics in a Mongolian dry steppe

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Journal of Plant Ecology 2016年第5期9卷 508-519页

作者： Tserenpurev bat-Oyun Masato Shinoda Yunxiang Cheng Yadamjav Purevdorj Arid Land Research Center Tottori UniversityHamasakaTottori 680-0001Japan Information and Research Institute of Meteorology Hydrology and EnvironmentUlaanbaatar 15160Mongolia Graduate School of Environmental Studies Nagoya UniversityFuro-choChikusa-kuNagoya 464-8601Japan College of Pastoral Agriculture Science and Technology Lanzhou UniversityLanzhou 730020China Department of Food Science and Human Wellness Rakuno Gakuen UniversityEbetsuHokkaido 069-8501Japan

Aims Grazing and water availability are the primary drivers of vegetation dynamics in grazing-dominated regions of Mongolia with a semi-arid climate and frequent *** animal husbandry still plays a large part in the economy of Mongolia,but more variable precipitation regime and increase in livestock number have severely affected grassland ecosystems through overgrazing,leading to pasture *** study aimed to examine the effects of grazing exclusion,interannual variation of plant-available precipitation(PAP)and their interaction on the aboveground biomass(AGB)of each dominant species,the AGB of annual species and the total AGB in a Mongolian dry steppe,using long-term field *** To detect the effect of grazing on vegetation dynamics,vegetation surveys were conducted in a non-grazed exclosure zone and a fully grazed area outside the *** assessed the effects of grazing,PAP and their interaction on AGB parameters using a generalized linear model.A detrended correspondence analysis(DCA)was used to visualize the effects of grazing and PAP on the AGB of each *** Findings Grazing,PAP and their interaction had significant effects on *** effect of grazing on AGB was larger with higher precipitation and higher amounts of AGB(***)while AGB was strongly limited in drought years,which resulted in a smaller grazing *** current year PAP had the highest impact(r=0.88,P<0.01)on *** dominance of annual species was characterized by the amount of PAP in the current and preceding years:annuals dominated in wet years that followed consecutive dry *** DCA Axis 1 reflected the variation of AGB with interannual variation of PAP while the DCA Axis 2 differentiated the grazing *** DCA scatter diagram based on species score illustrated that Artemisia adamsii(an unpalatable herb)was clearly linked to grazing disturbance whereas palatable perennials such as Agropyron cristatum,Stipa krylovii and Cleistogenes

关键词： aboveground biomass annual species drought grazing plant-available precipitation

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Parameters that control and influence the organo-metal halide perovskite crystallization and morphology

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Frontiers of Optoelectronics 2016年第1期9卷 44-52页

作者： bat-El COHEN Lioz ETGAR Institute of Chemistry The Hebrew University of Jerusalem Casali Center for Applied Chemistry Jerusalem 91904 Israel

This review discusses various parameters that influence and control the organo-metal halide perovskite crystallization process. The effect of the perovskite morphology on the photovoltaic performance is a critical factor. Moreover, it has a dramatic effect on the stability of the perovskite, which has significant importance for later use of the organo-metal perovskite in assorted applications. In this review, we brought together several research investigations that describe the main parameters that significantly influence perovskite crystallization, for example, the annealing process, the precursor solvent, anti-solvent treatment, and additives to the iteite solutions.

关键词： hybrid perovskite morphology crystallization perovskite surface

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Heat inactivation of the severe acute respiratory syndrome coronavirus 2

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Journal of Biosafety and Biosecurity 2021年第1期3卷 1-3页

作者： Christophe batéjat Quentin Grassin Jean-Claude Manuguerra India Leclercq Institut Pasteur UnitéEnvironnement et Risques InfectieuxCellule d’Intervention Biologique d’Urgence(CIBU)28 rue du Dr.RouxParisFrance Universitéde Paris Cellule Pasteur28 rue du Dr.Roux F-75015 ParisFrance

Cell culture medium,nasopharyngeal and sera samples spiked with SARS-CoV-2 were subjected to heat inactivation for various periods of time,ranging from 30 s to 60 *** results showed that SARS-CoV-2 could be inactivated in less than 30 min,15 min,and 3 min at 56℃,65℃,and 95℃,*** data could help laboratory workers to improve their protocols by handling the virus in biosafety conditions.

关键词： Heat Inactivation SARS-CoV-2 Covid-19

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Tif’alna Forms in Modern Hebrew

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Sociology Study 2020年第1期10卷 15-31页

作者： bat-Zion Yemini Levinsky College of Education Tel AvivIsrael

The article shows that speakers of Modern Hebrew continue to adhere to the tif’alna form that is characteristic of Biblical Hebrew,and not only when speaking or writing in a high *** counting of the occurrences of 19 tif’alna forms using Google’s search engine found thousands of quotations which,while mostly in a high register,also included examples of spoken language(which approximates to ladies and gentlemen),as well as language disruptions and the simpler yif’alu *** appears that the unceasing use of tif’alna forms today has links to the feminist revolution that showed its first signs in Israel in the ***’s organizations in Israel have come out against classical Hebrew’s generic form,which is *** use of the tif’alna form sits well with the modern trend of addressing a mixed audience twice over,as in ma’azinot u-ma’azinim.

关键词： language gender tif’alna feminine masculine

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The Revival of Ancient Hebrew Words With the Revival of Israel

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Sociology Study 2019年第4期9卷 156-168页

作者： bat-Zion Yemini Levinsky College Tel AvivIsrael

In this study,all the words in the latest edition of the Hebrew Even Shoshan Dictionary(2003)were scanned and ancient words that were not used continuously throughout the Hebrew strata—used in Modern Hebrew in their old or new meaning—were *** finding the appropriate words,we examined their incidence in the Gur dictionary(1946)to ensure that the new meanings had not existed *** have determined the scope of usage by general knowledge and Google *** 99 ancient words with new meanings were identified,39 of which are foreign,according to this distribution:31 biblical words,44 words of the Sages,and 24 medieval *** parallel with the 70 years of Israel’s independence,many ancient words were reintroduced with new modern meanings,to answer the need to create terms for the institutions of the sovereign state and for the masses of Jewish immigrants who spoke foreign *** of the words are from the Mishnah period,the last period in which Hebrew was a living language and adopted foreign words from the developed and advanced cultures of its *** article presents the innovations of words in different fields,explains it,and answers another questions.

关键词： revival of Hebrew words revival of Israel ancient words loanwords neologisms

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Unique Linguistic Awareness in the Israeli Media in the Corona Days and Tishrei Holidays

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Sociology Study 2021年第4期11卷 145-153页

作者： bat-Zion Yemini-Amrani Levinsky College of Education Tel AvivIsrael

The article illustrates and analyzes neologisms created during the corona period and the Tishrei holidays(=September 2020),and published in Hebrew newspapers and social media in *** neologisms based on dismantling a bound collocation deliberately disrupt one or two of its *** corpus is a collection of 32 statements containing puns and neologisms based mainly on Hebrew sources and texts from the prayer,and a minority of familiar *** compositions have a strong rhetorical effect-the allusion connects to the holidays and the corona virus and creates a combined message in addition to the separate messages that emerge from each of the *** works are innovative,surprising,enjoyable and create an ironic ***,they are extensive and invite profound and complex thoughts.

关键词： puns linguistic awareness neologisms bound collocation

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