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Effects of Temperature on Functional Response of Anagrus nilaparvatae Pang et Wang (Hymenoptera:Mymaridae) on the Eggs of Whitebacked Planthopper,Sogatella furcifera Horvth and Brown Planthopper,Nilaparvata lugens Stl

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Journal of Integrative Agriculture 2012年第8期11卷 1313-1320页

作者： MA Ming-yong peng zhao-pu HE Yuan Institute of Plant Protection Hunan Academy of Agricultural Sciences Changsha 412002 P.R.China Key Laboratory of Monitoring and Management of Plant Diseases and lnsects Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 P.R. China

Understanding the temperature affecting parasitic efficiency is critical to succeed in utilizing parasitoid as natural enemy in pest management. Laboratory studies were carried out to determine the effects of temperature on parasitoid preference of female Anagrus nilaparvatae Pang et Wang （Hymenoptera：Mymaridae） to the eggs of whitebacked planthopper （WBPH）, Sogatella furcifera Horváth and brown planthopper （BPH）, Nilaparvata lugens Stl to build a composite model describing changes in parasitic response along a temperature gradient （18, 22, 26, 30, 34°C）. The results showed that attack responses of A. nilaparvatae on WBPH and BPH were the best described by a Type II functional response. The two parameters, attack rates （a） and handling times （Th）, of A. nilaparvatae to both eggs were influenced by the temperature. The maximum attack rates to WBPH （1.235） and BPH （1.049） were at 26 and 34°C, respectively, and the shortest handling times to WBPH （0.063） and BPH （0.057） were at 30 and 26°C, respectively. However, the optimal temperature for parasitic efficiency of A. nilaparvatae to WBPH and BPH eggs was both at 26°C, which showed that the present microclimate temperature of the habitat in the paddyfield was beneficial to A. nilaparvatae and indicated that parasitic efficiency of A. nilaparvatae would be impaired by global warming.

关键词： functional response temperature Anagrus nilaparvatae whitebacked planthopper brown planthopper

Synthesis of chiral phosphine derivatives through a copper（I）-catalyzed desymmetric SNAr reaction

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Science China Chemistry 2025年

作者： Shuai Zhang Pei-Zhi Liu Yan-Bo Li Qi Zhang Jun-zhao Xiao Yi-Fan Wang Tian-Yu Wei Jia-Wei Jiang Ye Wang Qian peng Liang Yin Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences State Key Laboratory of Elemento-Organic Chemistry and Tianjin Key Laboratory of Biosensing and Molecular Recognition College of Chemistry Frontiers Science Center for New Organic Matter Nankai University Haihe Laboratory of Sustainable Chemical Transformations

Axially chiral phosphines are a class of extremely important ligands in asymmetric catalysis. Herein, an unprecedented copper（I）-catalyzed asymmetric SNAr reaction with HP（S）R2is uncovered, which delivers a series of axially chiral phosphine derivatives in high yields with excellent enantioselectivity. Furthermore, the diastereoselective reaction with the kinetic resolution of racemic HP（S）ArR proceeds smoothly, providing the products with moderate diastereoselectivity and excellent enantioselectivity. Control experiments indicate that HP（S）Ph2is much more active than HPPh2and HP（O）Ph2as the pronucleophile in the present reaction. It is found that the SNAr reaction （the first SNAr） proceeds in a desymmetric manner, providing the desired chiral products while a continued SNAr reaction （the second SNAr） slightly occurs in a kinetic resolution manner in the present catalytic system, which enhances the ee of the desired chiral products. DFTcalculations support a concerted reaction pathway rather than a step-wise mechanism. Finally, axially chiral olefin-phosphines produced by the present method work as suitable ligands in Pdcatalyzed asymmetric allylic substitution with C-, N-, and O-nucleophiles and Rh-catalyzed asymmetric addition of arylboronic acid to benzil.

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Persistent alterations in gray matter in COVID-19 patients experiencing sleep disturbances:a 3-month longitudinal study

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Neural Regeneration Research 2025年第10期20卷 3013-3024页

作者： Kaixuan Zhou Gaoxiong Duan Ying Liu Bei peng Xiaoyan Zhou Lixia Qin Lingyan Liang Yichen Wei Qingping Zhang Xiaocheng Li Haixia Qin Yinqi Lai Yian Lu Yan Zhang Jiazhu Huang Jinli Huang Yinfei Ouyang Bolin Bin Mingming zhao Jun Liu Jianrong Yang Demao Deng Guangxi Key Laboratory of Special Biomedicine School of MedicineGuangxi UniversityNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology the People’s Hospital of Guangxi Zhuang Autonomous RegionGuangxi Academy of Medical SciencesNanningGuangxi Zhuang Autonomous RegionChina Department of Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Guangxi Clinical Research Center for Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina

Sleep disturbances are among the most prevalent neuropsychiatric symptoms in individuals who have recovered from severe acute respiratory syndrome coronavirus 2 *** studies have demonstrated abnormal brain structures in patients with sleep disturbances who have recovered from coronavirus disease 2019(COVID-19).However,neuroimaging studies on sleep disturbances caused by COVID-19 are scarce,and existing studies have primarily focused on the long-term effects of the virus,with minimal acute phase *** a result,little is known about the pathophysiology of sleep disturbances in the acute phase of *** address this issue,we designed a longitudinal study to investigate whether alterations in brain structure occur during the acute phase of infection,and verified the results using 3-month follow-up data.A total of 26 COVID-19 patients with sleep disturbances(aged 51.5±13.57 years,8 women and 18 men),27 COVID-19 patients without sleep disturbances(aged 47.33±15.98 years,9 women and 18 men),and 31 age-and gender-matched healthy controls(aged 49.19±17.51 years,9 women and 22 men)were included in this *** COVID-19 patients with sleep disturbances were included in a longitudinal *** found that COVID-19 patients with sleep disturbances exhibited brain structural changes in almost all brain *** cortical thicknesses of the left pars opercularis and left precuneus were significantly negatively correlated with Pittsburgh Sleep Quality Index ***,we observed changes in the volume of the hippocampus and its subfield regions in COVID-19 patients compared with the healthy *** 3-month follow-up data revealed indices of altered cerebral structure(cortical thickness,cortical grey matter volume,and cortical surface area)in the frontal-parietal cortex compared with the baseline in COVID-19 patients with sleep *** findings indicate that the sleep disturbances patients had altered morphology in the cortical an

关键词： brain structure cortical gray matter volume cortical surface area cortical thickness hippocampus magnetic resonance imaging Pittsburgh Sleep Quality Index severe acute respiratory syndrome coronavirus 2 infections sleep disturbances sub-cortical volume

Exceptional Cycles in the Bounded Derived Categories of Quivers

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Acta Mathematica Sinica,English Series 2020年第3期36卷 207-223页

作者： peng GUO pu ZHANG School of Mathematical Sciences Shanghai Jiao Tong UniversityShanghai 200240P.R.C hina

An exceptional n-cycle in a Hom-finite triangulated category with Serre functor has been recently introduced by Broomhead,Pauksztello and *** n=1,it is a spherical *** explicitly determine all the exceptional cycles in the bounded derived category D^b(kQ)of a finite quiver Q without oriented *** particular,if Q is an Euclidean quiver,then the length type of exceptional cycles in D^b(kQ)is exactly the tubular type of Q;if Q is a Dynkin quiver of type E_m(m=6,7,8),or Q is a wild quiver,then there are no exceptional cycles in D^b(kQ);and if Q is a Dynkin quiver of type An or D_n,then the length of an exceptional cycle in D^b(kQ)is either h or h/2,where h is the Coxeter number of Q.

关键词： Exceptional cycle the Coxeter number the tubular type the length type

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胆囊癌的CT诊断

中国临床医学影像杂志 2000年第2期11卷 112-114页

作者：周怀琪张皓赵鹏普杜富会王文辉兰州医学院第一附属医院放射科甘肃兰州730000

目的 :通过对22例胆囊癌CT表现分析 ,探讨胆囊癌CT诊断价值和鉴别诊断 ,提高胆囊癌CT诊断水平。材料与方法 :本文收集经病理证实的22例胆囊癌病例 ,均做CT检查 ,其中10例行B超检查。分析其CT表现。结果 :胆囊癌女性多见 ,男女之比为1∶2... 详细信息

目的 :通过对22例胆囊癌CT表现分析 ,探讨胆囊癌CT诊断价值和鉴别诊断 ,提高胆囊癌CT诊断水平。材料与方法 :本文收集经病理证实的22例胆囊癌病例 ,均做CT检查 ,其中10例行B超检查。分析其CT表现。结果 :胆囊癌女性多见 ,男女之比为1∶2.1 ,好发于50岁以上患者。临床表现为上腹痛并肩背痛、黄疸及腹部肿块。CT表现 :①胆囊区肿块 ,密度不均 ,胆囊腔缩小或消失 ;②胆囊壁增厚 ,呈局限或弥漫性不规则增厚 ;③胆囊腔内软组织块影 ;④合并胆结石 ;⑤肝内外胆管扩张 ;⑥肝脏直接受侵犯 ;⑦累及胰和十二指肠 ;⑧肝脏转移 ,侵犯腹壁 ,合并腹水。结论 :胆囊癌并发结石 ,低于国外报道 ,与国内文献报道相近。CT诊断正确率略高于B超检查。CT对胆囊癌的诊断价值 :①CT对软组织分辨率高 ,可较清晰显示胆囊的原发病变和肿瘤扩散范围 ;②造影增强扫描可显示胆囊壁真正的厚度 ,而肿瘤所致增厚的胆囊壁密度高于正常胆囊壁及肝脏。本组1例早癌具有该征象 ,认为该征象极有利于胆囊癌的早期诊断。胆囊癌需与慢性胆囊炎、胆囊息肉及肝癌相鉴别。

关键词：胆囊肿瘤 CT 诊断

Optimized porous clay heterostructure for removal of acetaldehyde and toluene from indoor air

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Frontiers of Environmental Science & Engineering 2016年第2期10卷 219-228页

作者： pu zhao Lizhong ZHU Department of Environmental Science Zhejiang University Hangzhou 310058 China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Hangzhou 310058 China

Adsorption is the most widely used technology for the removal of indoor volatile organic compounds （VOCs）. However, existing adsorbent-based technologies are inadequate to meet the regulatory requirement, due to their limited adsorption capacity and efficiency, especially under high relative humidity （RH） conditions. In this study, a series of new porous clay heterostructure （PCH） adsorbents with various ratios ofmicropores to mesopores were synthesized, characterized and tested for the adsorp- tion of acetaldehyde and toluene. Two of them, PCH25 and PCH50, exhibited markedly improved adsorption capabil- ity, especially for hydrophilic acetaldehyde. The improved adsorption was attributed to their large micropore areas and high micropore-to-mesopore volume ratios. The amount of acetaldehyde adsorbed onto PCH25 at equilibrium reached 62.7 mg. g-l, eight times as much as the amount adsorbed onto conventional activated carbon （AC）. Even at a high RH of 80%, PCH25 removed seven and four times more of the acetaldehyde than AC and the unmodified raw PCHs did, respectively. This new PCH optimized for their high adsorption and resistance to humidity has promising applications as a cost-effective adsorbent for indoor air purification.

关键词： porous clay heterostmcture volatile organiccompounds adsorption adsorbent indoor air

Influence of formation heterogeneity on foam flooding performance using 2D and 3D models:an experimental study

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Petroleum Science 2020年第3期17卷 734-748页

作者： Ling-Zhi Hu Lin Sun Jin-Zhou zhao peng Wei Wan-Fen pu State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500SichuanChina MOE Key Laboratory of Oil and Gas Fine Chemicals School of Chemistry and Chemical Engineering.Xinjiang UniversityUrumchi 830046XinjiangChina Yumen Oilfield of Chinese National Petroleum Corp.Yumen 735211 GansuChina

The formation heterogeneity is considered as one of the major factors limiting the application of foam *** this paper,influences of formation properties,such as permeability,permeability distribution,interlayer,sedimentary rhythm and 3D heterogeneity,on the mobility control capability and oil displacement efficiency of foam flooding,were systematically investigated using 2D homogeneous and 2D/3D heterogeneous models under 120°C and salinity of 20×10~4 mg/*** flow resistance of foam was promoted as the permeability increased,which thus resulted in a considerable oil recovery *** the scenario of the vertical heterogeneous formations,it was observed that the permeability of the high-permeable layer was crucial to foam mobility control,and the positive rhythm appeared favorable to improve the foam flooding *** additional oil recovery increased to about 40%.The interlayer was favorable for the increases in mobility reduction factor and oil recovery of foam flooding when the low permeability ratio was *** the 3D heterogeneous formations,foam could efficiently adjust the areal and vertical heterogeneity through mobility control and gravity segregation,and thus enhancing the oil recovery to 11%–14%.The results derived from this work may provide some insight for the field test designs of foam flooding.

关键词： Foam flooding Permeability ratio 2D/3D models Heterogeneity Enhanced oil recovery

Electroacupuncture at Fengchi(GB20) inhibits calcitonin gene-related peptide expression in the trigeminovascular system of a rat model of migraine

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Neural Regeneration Research 2017年第5期12卷 804-811页

作者： Luo-peng zhao Lu Liu Pei Pei Zheng-yang Qu Yu-pu Zhu Lin-peng Wang Department of Acupuncture and Moxibustion Beijing Hospital of Traditional Chinese Medicine Capital Medical University Beijing China Beijing University of Chinese Medicine Beijing China The First Affiliated Hospital of Anhui University of Chinese Medicine Hefei Anhui Province China

Most migraine patients suffer from cutaneous allodynia; however, the underlying mechanisms are unclear. Calcitonin gene-related peptide（CGRP） plays an important role in the pathophysiology of migraine, and it is therefore, a potential therapeutic target for treating the pain. In the present study, a rat model of conscious migraine, induced by repeated electrical stimulation of the superior sagittal sinus, was established and treated with electroacupuncture at Fengchi（GB20）（depth of 2–3 mm, frequency of 2/15 Hz, intensity of 0.5–1.0 m A, 15 minutes/day, for 7 consecutive days）. Electroacupuncture at GB20 significantly alleviated the decrease in hind paw and facial withdrawal thresholds and significantly lessened the increase in the levels of CGRP in the trigeminal ganglion, trigeminal nucleus caudalis and ventroposterior medial thalamic nucleus in rats with migraine. No CGRP-positive cells were detected in the trigeminal nucleus caudalis or ventroposterior medial thalamic nucleus by immunofluorescence. Our findings suggest that electroacupuncture treatment ameliorates migraine pain and associated cutaneous allodynia by modulating the trigeminovascular system ascending pathway, at least in part by inhibiting CGRP expression in the trigeminal ganglion.

关键词： nerve regeneration electroacupuncture migraine calcitonin gene-related peptide cutaneous allodynia anti-nociceptive Fengchi trigeminal ganglion neural regeneration

Surface activation of colloidal indium phosphide nanocrystals

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Nano Research 2017年第3期10卷 941-958页

作者： Yang Li Chaodan pu Xiaogang peng Center for Chemistry of Novel & High-Performance Materials Department of Chemistry Zhejiang University Hangzhou 310027 China

Against general wisdom in crystallization, the nucleation of InP and III-V quantum dots （QDs） often dominates their growth. Systematic studies on InP QDs identified the key reason for this： the dense and tight alkanoate-ligand shell around each nanocrystal. Different strategies were explored to enable necessary ligand dynamics--i.e., ligands rapidly switching between being bonded to and detached from a nanocrystal upon thermal agitation--on nanocrystals to simultaneously retain colloidal stability and allow appreciable growth. Among all the surface-activation reagents tested, 2,4-diketones （such as acetylacetone） allowed the full growth of InP QDs with indium alkanoates and trimethylsilylphosphine as precursors. While small fatty acids （such as acetic acid） were partially active, common neutral ligands （such as fatty amines, organophosphines, and phosphine oxides） showed limited activation effects. The existing amine-based synthesis of InP QDs was activated by acetic acid formed in situ. Surface activation with common precursors enabled the growth of InP QDs with a distinguishable absorption peak between ~450 and 650 nm at mild temperatures （140-180 ~C）. Furthermore, surface activation was generally applicable for InAs and III-V based core/shell QDs.

关键词： quantum dots nanocrystals indium phosphide surface