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Chlorinating Mechanism of Cerium Dioxide by NH_4Cl

中部四省化学化工学会2016年学术年会

作者： Yu-Peng Yuan Li-Sha Yin Shao-Wen Cao Li-Na Gu geng-sheng xu Pingwu Du Hua Chai Yu-Sen Liao Can xue

The metal-free photocatalyst,g-CN,is very attractive for solarhydrogen ***,g-CN is mainly fabricated by theconversion of nitrogen-rich precursors at high temperature(400°C–600 °C) for a long reaction time(several hours to days).Herein we report a rapid synthetic strategy named "microwave(MW)-assisted heating synthesis",which allows the highly crystallineg-CN photocatalyst to be fabricated in *** obtainedg-CN displays enhanced photocatalytic H ***,the described synthetic strategy is a general approachthat can also be applicable to other nitrogen-rich organic precur-sors,such as melamine,cyanamide,and ***,thepresent process enables scale-up production of g-CN for severalgrams in minutes.

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Journal of Rare Earths 2000年第4期18卷 274-274页

作者： ZHU Guo cai, CHI Ru an, ZHANG Zhi geng, xu sheng ming, TIAN Jun ( Institute of Nuclear Technology, Tsinghua University, Beijing 102201, China)

The chlorinating mechanism of cerium dioxide was investigated by chlorinating CeO 2 with NH 4Cl and thermal analysis, which is useful for chlorinating RE minerals such as bastnasite by NH 4 Cl and preparing anhydrous RE chloride. The results indicate that NH 4Cl directly takes part in the chlorination of cerium dioxide by forming an intermediate CeOCl rather than by the HCl decomposed from NH 4Cl. Based on the chlorinating ratio of cerium dioxide being about 80% at 300 ℃ and decreasing at higher temperature, it is must be owing to thermal decomposition of CeCl 3·7H 2O. The thermal analysis experiments further prove the existence of CeOCl in the decomposition of CeCl 3·7H 2O, which loses 4H 2O, 5H 2O, 6H 2O and 7H 2O, stepwise and finally CeCl 3 is decomposed to CeOCl. Therefore chlorinating cerium dioxide with NH 4Cl should strictly control the temperature and time, and over dose NH 4Cl should be also applied as well.

关键词： rare earths cerium chlorination thermal decomposition

A Flexible Smart Healthcare Platform Conjugated with Artificial Epidermis Assembled by Three‑Dimensionally Conductive MOF Network for Gas and Pressure Sensing

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Nano-Micro Letters 2025年第2期17卷 601-620页

作者： Qingqing Zhou Qihang Ding Zixun geng Chencheng Hu Long Yang Zitong Kan Biao Dong Miae Won Hongwei Song Lin xu Jong Seung Kim State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea TheranoChem Incorporation Seoul 02856Republic of Korea

The rising flexible and intelligent electronics greatly facilitate the noninvasive and timely tracking of physiological information in telemedicine *** building bionic-sensitive moieties is vital for designing efficient electronic skin with advanced cognitive functionalities to pluralistically capture external ***,realistic mimesis,both in the skin’s three-dimensional interlocked hierarchical structures and synchronous encoding multistimuli information capacities,remains a challenging yet vital need for simplifying the design of flexible logic ***,we construct an artificial epidermal device by in situ growing Cu_(3)(HHTP)_(2) particles onto the hollow spherical Ti_(3)C_(2)T_(x) surface,aiming to concurrently emulate the spinous and granular layers of the skin’s *** bionic Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2) exhibits independent NO_(2) and pressure response,as well as novel functionalities such as acoustic signature perception and Morse code-encrypted message ***,a wearable alarming system with a mobile application terminal is self-developed by integrating the bimodular senor into flexible printed *** system can assess risk factors related with asthmatic,such as stimulation of external NO_(2) gas,abnormal expiratory behavior and exertion degrees of fingers,achieving a recognition accuracy of 97.6%as assisted by a machine learning *** work provides a feasible routine to develop intelligent multifunctional healthcare equipment for burgeoning transformative telemedicine diagnosis.

关键词： Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2)composites NO_(2)/pressure flexible sensors Health-monitoring Machine learning

复合型面裂合并困难气道患儿气管插管成功1例报道

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上海口腔医学 2004年第5期13卷 471-472页

作者：耿清胜徐辉姜虹朱也森上海第二医科大学附属第九人民医院麻醉科上海200011

报道1例男性患儿,7岁,诊断为5、6、7复合型面裂(facialmulti-clefts),拟在气管插管麻醉下行整形手术。存在颌面部严重畸形,及术前未发现的扁桃体肿大,在诱导期间,出现呼吸困难和通气困难,经放入中号口咽通气道,自主呼吸恢复正常,期间通... 详细信息

报道1例男性患儿,7岁,诊断为5、6、7复合型面裂(facialmulti-clefts),拟在气管插管麻醉下行整形手术。存在颌面部严重畸形,及术前未发现的扁桃体肿大,在诱导期间,出现呼吸困难和通气困难,经放入中号口咽通气道,自主呼吸恢复正常,期间通气道置入困难;在应用直接喉镜直视探查过程中,出现喉痉挛,经置入通气道、加压通气,呼吸恢复正常;经鼻盲探气管插管多次尝试未成功,最终借助直接喉镜直视下经口盲探气管插管成功。

关键词：气管插管置入正常直接喉镜气道患儿诊断困难复合型合并

Lactobacillus Fermentum发酵降酸对三华李汁品质的影响

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现代食品科技 2016年第11期32卷 134-138,62页

作者：袁星星余元善吴继军肖更生徐玉娟邹波江西农业大学食品科学与工程学院江西南昌330045 广东省农业科学院蚕业与农产品加工研究所农业部功能食品重点实验室广东省农产品加工重点实验室广东广州510610

本文分析了三华李汁发酵乳杆菌发酵降酸期间乳酸菌活菌数、糖组分、有机酸、p H、可滴定酸、总酚、抗氧化活性、花色苷、色泽的变化规律。结果表明,在30℃的条件下,发酵乳杆菌缓慢生长,发酵6 d后,菌种数量趋于稳定;发酵期间,菌株对糖的... 详细信息

本文分析了三华李汁发酵乳杆菌发酵降酸期间乳酸菌活菌数、糖组分、有机酸、p H、可滴定酸、总酚、抗氧化活性、花色苷、色泽的变化规律。结果表明,在30℃的条件下,发酵乳杆菌缓慢生长,发酵6 d后,菌种数量趋于稳定;发酵期间,菌株对糖的利用较缓慢,仅利用少量的葡萄糖维持代谢生长,而对苹果酸的消耗较快。随着苹果酸的大量消耗以及少量乳酸的生成,三华李汁的p H值快速上升,可滴定酸含量迅速下降;发酵8 d后,菌种数量由初始的7.01 log CFU/m L增加到7.91 log CFU/m L,苹果酸被完全消耗,葡萄糖保留73.82%,果糖保留97.7%,p H值上升了0.38,可滴定含量下降了43.7%,总酚保留82.23%,抗氧化活性(ORAC值)升高了14.90%,花色苷保留50%以上,三华李汁的色泽变化不显著(p>0.05)。因此,利用乳酸菌发酵三华李汁,不仅能够降低三华李汁酸度,而且很好地保留了三华李本身的营养成分。

关键词：三华李汁乳酸菌降酸发酵品质

层次分析法在农村生活污水处理工艺评价中的应用

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常州大学学报（自然科学版） 2013年第3期25卷 13-16页

作者：白雪耿凯潘新星耿旭盛王明新常州大学环境与安全工程学院江苏常州213164

农村生活污水处理设施示范推广中,对处理工艺进行定量优选评价有助于提高决策的科学性。为此,建立了一个考虑了经济性、有效性和适宜性的农村生活污水处理工艺评价指标体系,评价指标包括COD去除率、氨氮去除率、总磷去除率、基建成本、... 详细信息

农村生活污水处理设施示范推广中,对处理工艺进行定量优选评价有助于提高决策的科学性。为此,建立了一个考虑了经济性、有效性和适宜性的农村生活污水处理工艺评价指标体系,评价指标包括COD去除率、氨氮去除率、总磷去除率、基建成本、运行成本、占地面积、附加收益、技术稳定性、操作方便性和土地适宜性等。采用层次分析法对农村生活污水处理工艺备选方案进行优选评价,给出了评价标准和评价步骤,并进行了实例分析,评价结果符合当地的实际情况。该方法可为农村生活污水处理设施示范与推广中的工艺方案选择提供辅助决策分析工具。

关键词：农村生活污水工艺评价指标体系层次分析法

Laboratory test on moisture adsorption-desorption of wall paintings at Mogao Grottoes, China

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第3期13卷 208-218页

作者： Hu-yuan ZHANG geng-sheng YAN xu-dong WANG MOE Key Laboratory of Mechanics on Disaster and Environment in Western China Lanzhou University Lanzhou 730000 China School of Civil Engineering and Mechanics Lanzhou University Lanzhou 730000 China National Engineering Research Center of Ancient Mural Protection Dunhuang 736200 China Dunhuang Academy Dunhuang 736200 China

Moisture adsorption-desorption tests (MATs) were conducted on simulated mural plaster specimens under different air temperatures (ATs) and relative humidity (RH) to investigate the possible effect of seasonal alteration and visitors’ breath on the deterioration of Mogao Grottoes, Dunhuang, China. Saturated salt solutions were used to maintain a constant RH, and plant growth cabinets were used to maintain a constant or varying temperature in the simulation test. The weight of specimen was periodically measured to determine the adsorbed or desorbed moisture. Test data illustrate that the desorption process is far quicker than the adsorption one, indicating that it is possible to inhibit the disadvantage effect from visitors, such as shortening the staying time in caves. In case of high humidity, an accumulated moisture adsorption was found to correspond to the varying temperature. On the other hand, in case of low humidity, accumulated moisture desorption corresponded. Test data imply that opening caves more often to visitors in humid seasons should be avoided so as to prevent continuous wetting of wall paintings.

关键词： Mogao Grottoes Wall paintings Piaster Moisture adsorption-desorption Unsaturated soil

Cloning and Expression Profile of Deoxyhypusine Snyhtase Gene and Deoxyhypusine Hydroxylase Gene in Silkworm, Bombyx mori

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Agricultural Sciences in China 2009年第9期8卷 1120-1129页

作者： WANG geng-xian SIMA Yang-hu ZHANG sheng-xiang xu Shi-qing National Engineering Laboratory of Modern Silk College of Basic Medicine and Biological Sciences Soochow University Suzhou 215123. P.R. China Department of Biological Science Handan Collage Handan 056005 P.R.China College of Forestry Shandong Agricultural University Tai＇an 271018 P.R. China

Deoxyhypusine snyhtase （DHS） and deoxyhypusine hydroxylase （DOHH） are the two enzymes that catalyze the synthesis of hypusine within eukaryotic initiation factor 5A （eIF5A）. Synthesis of hypusine is essential for the function of eIF5A in eukaryotic cell proliferation and survival. Here we described the cloning and expression of two full-length cDNAs, encoding respectively DHS-like protein and DOHH-like protein from Bombyx mori by using the methods of bioinformatics, RACE, and RT-PCR technology, named as BmDHS and BmDOHH. Sequencing results indicate that they are 1 311 and 1 874 bp in length including complete open reading frame （ORF） 1 116 and 915 bp, which encode 371 amino acids （molecular weight is about 41.11 kD and isoelectric point is 5.84） and 304 amino acids （molecular weight is about 34.30 kD and isoelectric point is 4.86）, respectively. BmDHS contains only 1 exon, and BmDOHH contains 4 exons and 3 introns. The deduced amino acid sequence of BmDHS contains a deoxyhypusine synthase domain from 47 to 361 amino acid residues, and the deduced amino acid sequence of BmDOHH contains 6 E-Z type HEAT repeat domains （23-52, 54-83, 87-116, 177-206, 208-237, and 241- 270）. Compared to DHS and DOHH amino acid sequences from other species, such as Homo sapiens and Drosophila melanogaster, both silkworm DHS protein and DOHH protein have more than 55% identity. The conservative regions are very similar with each other. The phylogenetic tree analysis indicated that not only DHS but also DOHH from different species has genus-specific features. The expressions of BmDHS and BmDOHH are no tissue and stage specific in our tested samples.

关键词： Bombyx mori deoxyhypusine snyhtase deoxyhypusine hydroxylase gene cloning gene expression

Numerical simulation of shock wave phenomena in hydrodynamic model of semiconductor devices

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The Journal of China Universities of Posts and Telecommunications 2007年第1期14卷 71-76页

作者： xu Ning YANG geng College of Optical and Electric Engineering Nanjjing University of Posts and Telecommunications Nanjing 210003 China College of Mathematics and Physics Nanking University of Posts and Telecommunications Nanjing 210003 China

We propose a finite element method to investigate the phenomena of shock wave and to simulate the hydrodynamic model in semiconductor devices. An introduction of this model is discussed first. Then some scaling factors and a relationship between the changing variables are discussed. And then, we use a finite element method （P1-iso-P2 element） to discrete the equations. Some boundary conditions are also discussed. Finally, a sub-micron n%＋-n-n^＋ silicon diode and Si MESFET device are simulated and the results are analyzed. Numerical results show that electronic fluids are transonic under some conditions.

关键词： hydrodynamic model semiconductor devices finite element method shock wave

Present-day movement characteristics of the Qinghai Nanshan fault and its surrounding area from GPS observation

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Geodesy and Geodynamics 2024年第2期15卷 133-141页

作者： Yang Liu Yuxuan Qiu Jialiang Liu Luyun Xiong Caijun xu Jianghui geng Gang Zheng Tianchen sheng School of Geodesy and Geomatics Wuhan UniversityWuhan 430079China Key Laboratory of Geospace Environment and Geodesy Ministry of EducationWuhan UniversityWuhan 430079China Key Laboratory of Geophysical Geodesy Ministry of Natural ResourcesWuhan UniversityWuhan 430079China GNSS Research Center Wuhan UniversityWuhan 430079China School of Earth and Environment University of LeedsLeeds LS29JTUK Qinghai Basic Surveying and Mapping Institute Xining 810101China

The Qinghai Nanshan fault is a larger fault in the Northeastern Xizang *** previous studies,its movement characteristics are mainly investigated with geological and seismic observations,and the tectonic transformation role of the fault on its east is not yet *** study uses data fusion to obtain denser GPS observations near the Qinghai Nanshan *** on tectonic characteristics,we establish a block model to investigate the fault slip rate,locking degree,and slip *** results show that the Qinghai Nanshan fault slip rate is characterized by sinistral and convergent *** the sinistral and convergent rates display a decreasing trend from west to *** locking degree and slip deficit are higher in the western segment(with an average of about 0.74 and 1.1 mm/a)and lower in the eastern ***,we construct a strain rate field using GPS observations to analyze the regional strain *** results indicate that along the fault,the western segment shows a larger shear strain rate and negative dilation *** earthquake records show that the frequency of earthquakes is lower near the *** joint results suggest that the western segment may have a higher earthquake *** addition,the insignificant fault slip rate in the eastern segment may indicate that it does not participate in the tectonic transformation among the Riyueshan,Lajishan,and West Qinling faults.

关键词： The Qinghai Nanshan fault Movement characteristics Block model Slip rate GPS