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数据对接融合背景下地方级公益林落界调整对策研究--以贵州省黔南布依族苗族自治州为例

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陕西林业科技 2024年第4期52卷 105-109页

作者：周世敏曾永美安娟艳王化秋黔南布依族苗族自治州林业局贵州都匀550100

本文基于2022年林草湿数据与第三次全国国土调查数据对接融合背景下,以黔南布依族苗族自治州(以下简称“黔南州”)为例,结合新出台的《贵州省地方级公益林划定和管理办法》等文件规定,针对近几年来地方级公益林存在区划不合理、边界落... 详细信息

本文基于2022年林草湿数据与第三次全国国土调查数据对接融合背景下,以黔南布依族苗族自治州(以下简称“黔南州”)为例,结合新出台的《贵州省地方级公益林划定和管理办法》等文件规定,针对近几年来地方级公益林存在区划不合理、边界落实不明确及补偿兑现困难等问题。在数据对接融合后开展了地方级公益林落界核实调整工作,地方级公益林调整前面积3874.4869 km^(2),调整后面积为3777.9807 km^(2),减少了96.5062 km^(2),落界核实调整从调出地块(包括优化调出、一般调出及转化)和补进地块(包括划进和拟保留)两个方面进行了客观分析研究,做出结论与讨论,对地方级公益林的优化调整具有指导意义。

关键词：地方级公益林调整研究数据对接融合

真性红细胞增多症患者静脉血栓栓塞危险因素分析及预测模型的建立

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中华医学杂志 2024年第25期104卷 2336-2341页

作者：马金玉张宇卉滕广帅杜晨霄张会勤王艳李艳旗段依璠周圆邵宗鸿白洁天津医科大学第二医院血液科天津300211 中国医学科学院血液病医院中国医学科学院血液学研究所实验血液学国家重点实验室国家血液系统疾病临床医学研究中心细胞生态海河实验室天津300020

目的探讨真性红细胞增多症(PV)患者发生静脉血栓的危险因素,并建立静脉血栓预测模型。方法回顾性纳入2017年9月至2023年11月天津医科大学第二医院JAK2^(V617F)基因突变阳性的PV患者,根据患者是否发生静脉血栓进行分组,采用倾向性评分匹... 详细信息

目的探讨真性红细胞增多症(PV)患者发生静脉血栓的危险因素,并建立静脉血栓预测模型。方法回顾性纳入2017年9月至2023年11月天津医科大学第二医院JAK2^(V617F)基因突变阳性的PV患者,根据患者是否发生静脉血栓进行分组,采用倾向性评分匹配年龄、性别因素后,最终静脉血栓组纳入102例[男46例,女56例,年龄M(Q_(1),Q_(3))为52(44,60)岁],无静脉血栓组纳入204例[男92例,女112例,年龄为52(44,59)岁]。比较两组PV患者的临床及实验室特征、疾病进展、基因突变发生率等。随访截止日期为2023年11月20日,中位随访时间[M(Q_(1),Q_(3))]为11(1,53)年。采用多因素Cox风险模型对PV患者发生静脉血栓的影响因素进行分析,建立PV患者静脉血栓危险因素预测模型评分系统。采用受试者工作特征(ROC)曲线对该模型进行预测效能评估。结果静脉血栓组血红蛋白浓度、红细胞压积≥55%比例、中性粒细胞与淋巴细胞比率≥5比例、高血压比例、脾肋下≥5 cm比例、继发骨髓纤维化比例均高于无静脉血栓组(均P<0.05)。且静脉血栓组发生既往血栓栓塞史比例、JAK2^(V617F)基因突变负荷≥50%比例、糖尿病比例、携带ASXL1突变比例、继发网状纤维银染色≥3级比例均高于无静脉血栓组(均P<0.05)。静脉血栓组PV患者发生3个及以上基因突变比例为44.1%(45/102),高于无静脉血栓组的29.9%(61/204)(P=0.014)。静脉血栓组发生ASXL1基因突变比例为17.6%(18/102),高于无静脉血栓组的4.9%(10/204)(P<0.001)。多因素Cox风险模型分析结果表明,既往血栓栓塞史(HR=2.031,95%CI:1.297~3.179,P=0.002)、JAK2^(V617F)基因突变负荷≥50%(HR=2.141,95%CI:1.370~3.347,P=0.001)、ASXL1突变(HR=4.632,95%CI:1.497~14.336,P=0.008)、脾肋下≥5 cm(HR=1.771,95%CI:1.047~2.996,P=0.033)是PV患者发生静脉血栓栓塞的危险因素。建立PV患者静脉血栓危险因素预测模型评分系统:既往血栓栓塞史、JAK2^(V617F)基因突变负荷≥50%、脾肋下≥5 cm分别赋值1分,ASXL1突变赋值2分。低危组:评分为0分,中危组:评分为1~2分,高危组:评分≥3分。该模型预测PV患者发生静脉血栓的ROC曲线分析结果显示:曲线下面积(AUC)为0.807(95%CI:0.755~0.860),当约登指数为0.48时,灵敏度为88.2%,特异度为59.8%。结论既往血栓栓塞史、JAK2^(V617F)基因突变负荷≥50%、ASXL1突变、脾肋下≥5 cm是PV患者发生静脉血栓栓塞的危险因素。建立的预测模型具有较好的预测效能。

关键词：红细胞增多症,真性静脉血栓栓塞危险因素预测模型

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转录组分析筛选调控苹果分枝能力的关键基因

中国农业科学 2024年第10期57卷 1995-2009页

作者：张海青张恒涛高启明姚家龙王亚荣刘珍珍孟祥鹏周喆阎振立中国农业科学院郑州果树研究所

【背景】苹果分枝数量的多少对于树体适应环境、生长生存、竞争资源都具有十分重要的作用。在实际生产过程中，多分枝的苹果品种更能满足整形修剪的需求，其不仅有利于果农因地制宜适时调整树体结构，塑造便于机械化采收的树形；而且对... 详细信息

【背景】苹果分枝数量的多少对于树体适应环境、生长生存、竞争资源都具有十分重要的作用。在实际生产过程中，多分枝的苹果品种更能满足整形修剪的需求，其不仅有利于果农因地制宜适时调整树体结构，塑造便于机械化采收的树形；而且对于调整结果枝均匀分布、保证结果量和果实品质都至关重要。【目的】本研究拟通过对同一发育时期的多分枝品种‘华星’和少分枝品种‘华硕’的顶芽、侧芽分别进行转录组测序，挖掘影响苹果分枝能力的关键基因，解析候选基因通过介导激素通路调控苹果分枝能力的潜在机理，为提高苹果分枝能力及产量提供理论依据。【方法】分别对‘华硕’和‘华星’的侧芽及顶芽进行转录组测序，通过差异表达基因（DEG）分析并借助加权基因共表达网络分析（weighted gene co-expression network analysis,WGCNA）等生物信息学手段，筛选引起分枝数量差异的核心候选基因，并通过在拟南芥中异源过表达候选基因对筛选结果准确性进行验证。【结果】在‘华硕’和‘华星’的顶芽之间比对共得到2 920个差异表达基因，而‘华硕’和‘华星’侧芽间比较共筛选到5 127个差异表达基因。DEGs主要富集在植物激素信号传导通路中，生长素信号通路和独脚金内酯信号通路与苹果分枝能力关系最密切，相关编码MdIAA3、MAX2、TCP、JAZ等家族的基因在两个品种侧芽间的差异十分显著。编码CYC(cyclins)、CDK(cyclin-dependent kinase)、EXPA(expansin)等细胞周期、细胞壁修饰相关基因家族的DEGs也与苹果分枝能力呈正相关。进一步通过WGCNA分析得到候选基因CAD、EXPA、CYC、JAZ、SAUR的互作网络关系，这些基因可能在苹果分枝能力的调控过程中具有一定作用。对MdIAA3异源转化拟南芥后，发现MdIAA3明显增加了拟南芥长势、结荚数、分枝数。【结论】通过转录组分析，筛选到13个调控基因可作为苹果分枝能力控制的潜在基因，MdIAA3在拟南芥中异位表达，明显促进了植株长势和分枝能力；苹果分枝能力的调控主要涉及细胞的分化与发育，细胞壁修饰，生长素、独脚金内酯信号传导等过程。

关键词：苹果分枝能力转录组分析 KEGG 植物激素 MdIAA3

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明末清初戏曲家周之标性别、交游、著述考

浙江艺术职业学院学报 2024年第1期22卷 17-24页

作者：邓嫣山西艺术职业学院太原030009

周之标是明末清初活跃于俗文学领域的戏曲家、出版家。周之标确为男性无疑,《吴姬百媚》记载了大量周氏与吴姬交往的细节;附于《兰咳集》出版的《古牌谱》,出自周之标妻子胡贞波之手。周之标有交游的人物多为吴地名士,其文人身份得到当... 详细信息

周之标是明末清初活跃于俗文学领域的戏曲家、出版家。周之标确为男性无疑,《吴姬百媚》记载了大量周氏与吴姬交往的细节;附于《兰咳集》出版的《古牌谱》,出自周之标妻子胡贞波之手。周之标有交游的人物多为吴地名士,其文人身份得到当地士绅阶层认可。《赛征歌集》不能判定为周之标编选,《吴姬百媚》可以判定为周之标创作的咏姬别集。周氏著述自明万历晚期始,至清顺治中后期止,在江南文士群体中造成一定影响。

关键词：周之标《吴姬百媚》《赛征歌集》

Preparation of narrow band gap V_2O_5/TiO_2 composite films by micro-arc oxidation

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International Journal of Minerals,Metallurgy and Materials 2012年第11期19卷 1045-1051页

作者： Qiang Luo Xin-wei Li Qi-zhou Cai Qing-song yan Zhen-hua Pan State Key Lab of Material Processing and Dies & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology Nanchang Hangkong University Nanchang 330063 China

V2Os/TiO2 composite films were prepared on pure titanium substmtes via micro-arc oxidation （MAO） in electrolytes consisting of NaVO3. Their morphology and dements were characterized by scanning electron microscopy （SEM） and energy-dispersive X-ray （EDX） analysis. Phase composition and valence states of species in the films were characterized by X-ray diffraction （XRD） and X-ray photoelec- tron spectroscopy （XPS）. Ultraviolet-visible diffuse reflectance spectra （UV-Vis DRS） were also employed to evaluate the photophysical property of the films. The VEOs/TiO2 composite films show a sheet-like morphology. Not only V205 phase appears in the films when the NaVO3 concentration of the electrolyte is higher than 6,10 g/L and is loaded at the surface of anatase, but also V4＋ is incorporated into the crystal lattice of anatase. In comparison with pure TiO2 films the V2Os/TiO2 composite films exhibit significantly narrow band gap energy. The film prepared in an electrolyte consisting of NaVO3 with a concentration of 8.54 g/L exhibits the narrowest band gap energy, which is approximately 1.89 eV. The V2Os/TiO2 composite films also have the significantly enhanced visible light photocatalytic activity. The film prepared in an electrolyte consisting of NaVO3 with a concentration of 8.54 g/L exhibits the best photocatalytic activity and about 93% of rhodamine is degraded after 14 h visible light radiation.

关键词： composite films titanium dioxide vanadium pentoxide micro-arc oxidation sodium metavanadate rhodamine photocatalysis

Enhancing light absorption for organic solar cells using front ITO nanograting and back ultrathin Al layer

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Chinese Physics B 2021年第10期30卷 334-341页

作者： Li Zhang Wei-Ning Liu yan-zhou Wang Qi-Ming Liu Jun-Shuai Li Ya-Li Li De-yan He Key Laboratory of Special Function Materials&Structure Design of the Ministry of Education Lanzhou UniversityLanzhou 730000China School of Physical Science&Technology Lanzhou UniversityLanzhou 730000China School of Materials&Energy Lanzhou UniversityLanzhou 730000China

To address the discrepancy between carrier collection and light absorption of organic solar cells caused by the limited carrier mobility and optical absorption coefficient for the normally employed organic photoactive layers,a light management structure composed of a front indium tin oxide(ITO)nanograting and ultrathin Al layer inserted in between the photoactive layer and the electron transport layer(ETL)is *** to the antireflection and light scattering induced by the ITO nanograting and the suppression of light absorption in the ETL by the inserted Al layer,the light absorption of the photoactive layer is significantly enhanced in a spectral range from 400 nm to 650 nm that also covers the main energy region of solar irradiation for the normally employed active materials such as the P3HT:PC_(61)BM *** simulation results indicate that comparing with the control device with a planar configuration of ITO/PEDOT:PSS/P3HT:PC_(61)BM(80-nm thick)/ZnO/Al,the short-circuit current density and power conversion efficiency of the optimized light management structure can be improved by 32.86%and 34.46%.Moreover,good omnidirectional light management is observed for the proposed device *** to the fact that the light management structure possesses the simple structure and excellent performance,the exploration of such a structure can be believed to be significant in fabricating the thin film-based optoelectronic devices.

关键词： light management structures ITO nanograting organic solar cells thin film-based optoelectronic devices

Direct Urca Processes with Hyperons in Cooling Neutron Stars

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Chinese Physics Letters 2011年第7期28卷 334-337页

作者： XU yan LIU Guang-zhou WU Yao-Rui ZHU Ming-Feng YU Zi WANG Hong-yan ZHAO En-Guang Center for Theoretical Physics Jilin UniversityChangchun 130012 College of Science Nanjing Forestry UniversityNanjing 210037 Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190

In the relativistic mean field approximation,the relativistic energy losses of the direct Urca processes with nucleons(N-DURCA)and hyperons(Y-DURCA)are studied in the degenerate baryon matter of neutron *** investigate the effects of hyperon degrees of freedom and the Y-DURCA processes on the N-DURCA processes,and the total neutrino emissivity of neutron star *** results show that the existence of hyperons decreases the abundance of protons and leptons,and can sharply suppress the neutrino emissivity of the N-DURCA processes.

关键词： processes relativistic sharply

Cloning of human and mouse GRY-RBP cDNA

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Chinese Science Bulletin 2000年第4期45卷 343-350页

作者： Guangwei Du Meihui Pan yan zhou Jianhe Chen Hui Yao Jiangang Yuan Boqin Qiang Chinese Acad Med Sci Peking Union Med Coll Natl Ctr Human Genome Res Inst Inst Basic Med SciNatl Lab Med Mol Biol Beijing 100005 Peoples R China

After screening human fetal brain cDNA library, a novel human cDNA encoding an RNA-binding protein was cloned and named GRY-RBP. Human GRY-RBP cDNA is 2 932 bp in length, and encodes a protein of 623 amino acids with a deduced molecular mass of 69.6 ku. Human GRY-RBP contains three RNA recognition motifs (RRMs) and a glycine (G), tyrosin (Y)-rich C-terminus. Computer searches with sequence database revealed its moderate homology with RRMs of many RRM RNA-binding proteins. in this study, the full coding region and partial non-coding region of mouse GRY-RBP cDNA were amplified by PCR using mouse brain cDNA library as template. Three transcripts of Gry-rbp are expressed in ali tissues as shown by Northern blot, but the amounts in heart, planceta and skeletal muscle are considerably higher than those in other tissues.

关键词： RRM RNA-binding protein GRY-RBP tissue expression.

Flexibility of a 300 MW Arch Firing Boiler Burning Low Quality Coals

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Journal of China University of Mining and Technology 2007年第4期17卷 566-571页

作者： FANG Qing-yan zhou Huai-chun WANG Hua-jian YAO Bin ZENG Han-cai State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan Hubei 430074 China

Experimental investigations on the flexibility of a 300 MW Arch Firing (AF) coal-fired boiler when burning low quality coals is reported. Measurements of gas temperature and species concentration and char sampling using a water-cooled suction pyrometer were carried out along the furnace elevation. The carbon content and the size distribu-tions of the char samples were obtained. The char morphology was examined using a field emission scanning electron microscope (FESEM). The char sampling was performed on this type of boiler for the first time. The results indicate that the flexibility of this boiler burning low quality coals under a moderate boiler load is better than its flexibility under a high boiler load. Because of the insufficient capacity of the coal pulverizers used,in case of low coal quality the pul-verized coal fineness will drastically decrease under high boiler loads. This causes an increase in the loss due to incom-plete mechanical and chemical combustion. This is the main cause of a low burnout degree of the pulverized coal and the decrease of the flexibility of this AF boiler under a high boiler load.

关键词： coal-fired boilers flexibility burnout temperatures size distributions