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Elevated temperature intensity,timing,and duration of exposure affect soybean internode elongation,mainstem node number,and pod number per plant

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The Crop Journal 2018年第2期6卷 148-161页

作者： Leon Hartwell Allen Jr. lingxiao zhang Kenneth J.Boote Bernard A.Hauser U.S.Department of Agriculture-Agricultural Research Service GainesvilleFL 32608USA Department of Agronomy University of FloridaGainesvilleFL 32611USA Department of Biology University of FloridaGainesvilleFL 32611USA

A study was conducted in four compartments of a polycarbonate greenhouse at Gainesville,FL, USA to investigate how a soybean(Glycine max L. Merr.) cultivar, Maverick(maturity group III, indeterminate), responded to three elevated temperatures, ELT,(day/night of 34/26 °C, 38/30 °C, and 42/34 °C) in comparison to a control growth temperature(30/22 °C).Carbon dioxide(CO_2) concentration was maintained at 700 μmol mol^(-1) in each compartment by a processor controlled air-sampling and CO_2-injection system. Three sequential experiments were conducted at different times of year(summer, autumn, and early spring)to investigate the effect of intensity, timing, and duration of ELT on soybean node number,internode elongation, mainstem length, and number of pods set per plant. At the control temperature, the soybean plants grown in the polycarbonate greenhouse were taller than field-grown plants. When plants were grown under continuous ELT applied soon after sowing or at initial flowering, the number of nodes increased with increasing ELT intensity,whereas the length of individual internodes decreased. When ELT treatment was applied during the beginning of flowering stage(R1–R2) or earlier, more nodes were produced and the length of affected internodes was decreased. When the ELT was imposed later at reproductive stage R5+ just before the beginning of seed filling, effects on node numbers and internode lengths were negligible. Short-term(10-day) duration of ELT applied at four stages from V3 to R5+ did not significantly affect final mean numbers of nodes or mean mainstem lengths. Possible mechanisms of elevated temperature effects on soybean internode elongation and node number(internode number) are discussed. Total pod numbers per plant increased linearly with mainstem node numbers and mainstem ***, total pod numbers per plant were greatest at 34/26 °C rather than at the control temperature of 30/22 °C(and remained high at 38/30 °C). Mild increases in temperatu

关键词： Elevated temperature Internode elongation Node number Pod yield Soybean phenology

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Facile production of ultrathin graphitic carbon nitride nanoplatelets for efficient visible-light water splitting

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Nano Research 2015年第5期8卷 1718-1728页

作者： Qing Han Fei Zhao Chuangang Hu lingxiao Lv Zhipan zhang Nan Chen Liangti Qu Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry Beijing Institute of Technology Beijing 100081 China

Ultrathin graphitic carbon nitride nanoplatelets （UGCNPs） are synthesized by a facile manner via an efficient and eco-friendly ball milling approach. The obtained UGCNPs are 2-6 nm in size and 0.35-0.7 nm in thickness, with improved specific surface area over that of bulk graphitic carbon nitride. Photochemical experiments show that the UGCNPs are highly active in visible-light water splitting, with a hydrogen evolution rate of 1,365 μmol·h^-1·g^-1, which is 13.7-fold greater than that of their bulk counterparts. The notable improvement in the hydrogen evolution rate observed with UGCNPs under visible light is due to the synergistic effects derived from the increased specific surface area, reduced thickness, and a negative shift in the conduction band concomitant with the exfoliation of bulk graphitic carbon nitride into UGCNPs. In addition to metal- free visible-light-driven photocatalytic hydrogen production, the UGCNPs find attractive applications in biomedical imaging and optoelectronics because of their superior luminescence characteristics.

关键词： ultrathin graphitic carbon nitride nanoplatelets eco-friendl photocatalyst hydrogen production visible-light water splitting

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Synthetical optimization of the structure dimension for the thermoacoustic regenerator

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Chinese Physics B 2022年第3期31卷 323-328页

作者： Huifang Kang lingxiao zhang Jun Shen Xiachen Ding Zhenxing Li Jun Liu Beijing Institute of Technology Beijing 100124China Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100190China

The quantitative investigation of parameters in the renegerator is essential for the optimization of thermoacoustic devices, while the majority of the previous research only considered parameters of the working field, working gas and the hydraulic radius. Based on the linear thermoacoustic theory, this paper extracts a normalized parameter for low-amplitude conditions, which is called the regenerator operation factor. By extracting the regenerator operation factor and relative hydraulic radius, the influence of frequency on the efficiency can be controlled and offset. It can be found that thermoacoustic devices with different frequencies can perform the same efficiency by adjusting the radius in proportion to the axial ***, this paper synthetically optimizes the dimension of the thermoacoustic regenerator by taking the regenerator operation factor, relative hydraulic radius and acoustic field parameter as variables. Conclusions in this paper are of great significance for explaining the best working conditions of engines and directing the miniaturization and optimal design of thermoacoustic devices.

关键词： thermoacoustic regenerator hydraulic radius regenerator length

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2023‘Happy Chinese New Year’Series of Activities Held by the China National Tourist Office in Rome

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China & The World Cultural Exchange 2023年第2期 35-37页

作者： zhang lingxiao 不详

During the Spring Festival,the China National Tourist Office in Rome planned and held a series of wonderful"Happy Chinese New Year"activities,such as"Happy Chinese New Year with Me","Happy Chinese New Year Party of Ge... 详细信息

关键词： Spring Office Generation

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Effects of Planting and Maturity Dates on Shattering Patterns under Early Soybean Production System

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American Journal of Plant Sciences 2012年第1期3卷 119-124页

作者： lingxiao zhang Nacer Bellaloui Chemistry Research Unit Center for Medical Agricultural & Veterinary Entomology USDA-ARS Crop Genetics Research Unit USDA-ARS

Seed shattering is a common problem in early soybean production system (ESPS) in the Midsouth, which mainly uses maturity group (MG) IV soybeans. Many studies have been conducted on the genetics of soybean shattering resistance for individual varieties;however, information on the physiology of soybean shattering pattern under specific environmental conditions, which is often critical to soybean growers, is very limited. Field experiments were conducted at Stoneville MS from 2007 to 2009 to investigate the shattering patterns of 80-132 MG IV soybean varieties each year. Results from 2007 and 2008 indicated that, when April-planted MG IV soybeans matured in mid- to late August, pods of most soybean varieties did not shatter within the first three weeks after maturity (WAM) and there was no significant shattering effect on final yields. However, differences in pod shattering among the varieties became apparent in the fourth WAM. Late-planted MG IV soybeans, which matured in early September, had a low shattering rate and could hold seeds up to 6 WAM before reaching a critical shattering point. Most soybean varieties planted in April 2009 did not show significant pod shattering by the end of the fourth WAM. The critical point of shattering was not reached until 6 - 7 WAM. Relatively lower temperatures and abundant rainfall during the late growing season in 2009 may be the main reasons causing delayed shattering in April-planted MG IV soybeans. Results from the May-planting of 2007 and the April-planting of 2009 indicated that soybeans maturing after September have much less problematic shattering. Different weather patterns, especially temperature and rainfall in each year could be essential factors affecting seed shattering patterns.

关键词： Soybean Shattering Maturity Group Planting Date Weather

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3D Density Model for the Lithosphere of Alxa Block based on Gravity Inversion using Adaptive Inversion Grid Refinement in Spherical Coordinates

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 101-103页

作者： ZHU Keying CHEN Chutong GUO Chang’an zhang lingxiao WANG Bin Center for Geophysical Survey China Geological SurveyLangfangHebei 065000China Technology Innovation Center for Earth Near Surface Detection China Geological SurveyLangfangHebei 065000China

1 Inctroduction The study of the earth's gravitational field is an important part of the explanation of the law of evolution and the distribution of materials on the *** satellite is a new space exploration technology rising in the 21st century,which can provide global-scale gravity measurement data,and scientists have carried out extensive research using gravity satellite *** inversion is commonly used to describe the density structure of the crust and the mantle,providing insights into geological evolution and geodynamic processes.

关键词： mantle evolution gravitational

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Electrical Resistivity Structures of the Beishan Block,NW China,and Tectonic Implications

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 90-93页

作者： zhang lingxiao GUO Chang'an CHEN Chutong YUAN Weiheng ZHU Keying Center for Geophysical Survey China Geological SurveyLangfangHebei 065000China Technology Innovation Center for Earth Near Surface Detection China Geological SurveyLangfangHebei ***China

The Central Asian Orogenic Belt(CAOB)is a giant orogenic belt located between the Siberian Plate,the Tarim Plate,and the North China Plate,which records the longterm and complex geologic evolution of the Paleo-Asian Ocean from the Early Neoproterozoic(ca.1000 Ma)to the Late Paleoproterozoic(ca.250 Ma)*** Beishan Block is located in the middle and southern edge of the Central Asian orogenic belt,at the intersection of the Tarim plate,the Siberian Plate and the Kazakhstan Plate.

关键词： electrical structures magnetotelluric Beishan Block

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The Electrical Structure and Geodynamic Significance in the Alxa Block

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 77-80页

作者： YUAN Weiheng CHEN Xiaoqiang GUO Chang’an WANG Bin zhang lingxiao CHEN Chutong Center for Geophysical Survey China Geological SurveyLangfangHebei 065000China Technology Innovation Center for Earth Near Surface Detection China Geological SurveyLangfangHebei 065000China

1 Introduction The Alxa region is situated at the intersection of the Tarim Plate and the North China Plate,serving as a critical juncture between the southern boundary of the Central Asian Orogenic Belt(CAOB)and the Alxa Block(Song et al.,2020)(Fig.1).This region connects the Tianshan and Beishan orogens to the west with the Solonker suture to the east,offering a unique vantage point for examining the evolution of the Paleo-Asian Ocean.

关键词： Tianshan Asian situated

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Neck Formation and Decay in Intermediate Energy HIC

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IMP & HIRFL Annual Report 1996年第1期 138-139页

作者： Chen Liewen Ge lingxiao and zhang Fengshou

ＮｅｃｋＦｏｒｍａｔｉｏｎａｎｄＤｅｃａｙｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏａｎｄＺｈａｎｇＦｅｎｇｓｈｏｕＩｎｒｅｃｅｎｔｙｅａｒｓ，ｐｅｏｐｌｅｆｏｕｎｄｔ... 详细信息

ＮｅｃｋＦｏｒｍａｔｉｏｎａｎｄＤｅｃａｙｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏａｎｄＺｈａｎｇＦｅｎｇｓｈｏｕＩｎｒｅｃｅｎｔｙｅａｒｓ，ｐｅｏｐｌｅｆｏｕｎｄｔｈａｔｔｈｅｓｈａｐｅｉｎｓｔａｂ...

关键词： Intermediate

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Tectonic Evolution and Lithospheric Structure of the Beishan Orogen:Insights from Magnetotelluric Studies

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 6-9页

作者： CHEN Chutong ZHU Keying LYU Binbin zhang lingxiao YUAN Weiheng WANG Bin GUO Chang’an Center for Geophysical Survey China Geological SurveyLangfangHebei 065000China Technology Innovation Center for Earth Near Surface Detection China Geological Survey LangfangHebei 065000China

The Beishan orogen,located in the central segment of the Tianshan–Solonker suture within the southern Central Asian Orogenic Belt(CAOB),is crucial for understanding the accretionary processes and continental growth in Central *** orogen developed through the episodic amalgamation and accretion of continental margin arcs,island arcs,ophiolites,and accretionary wedges,undergoing a complex process of accretion and *** the Phanerozoic,the Beishan orogen has experienced multiple phases of magmatic and collision *** intricate distribution of magmatic arc rocks has obscured the complete basement traces,and the spatial superposition of multiple magmatic arc phases has complicated the study of its evolutionary history.

关键词： magnetotelluric survey three-dimension inversion tectonic evolution Beishan Orogen

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