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Mental accounting and consumption of self-produced food

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Journal of Integrative Agriculture 2021年第9期20卷 2569-2580页

作者： hUANG Jia-qi Gerrit ANTONIDES Christian h.KUhLGATZ NIE Feng-ying Agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Urban Economics Group Department of Social SciencesWageningen UniversityWageningen 6706 KNThe Netherlands Market Analysis Unit Federal Office for Agriculture FOAG3003 BernSwitzerland

This is an exploratory study on mental accounting and food budgeting of agricultural households,in which we assumed that agricultural households may have a mental account for consumption of their self-produced ***,they may reserve a certain quantity of self-produced food as a set budget for own consumption,implying that they may keep on consuming their own produce until they have consumed the quantity set for the mental *** making the mental accounting assumption,we hypothesized that the consumption of self-produced food is independent of market ***,we hypothesized that the consumption of self-produced food is increasing in the quantity of production if production is lower than the set budget,and independent of the quantity of production if production exceeds the set *** applying a double-log demand model and using survey data from six poor rural counties in China,we tested these hypotheses for five food items,which are rice,flour,potatoes,pork,and *** found that the hypothesis of no significant effect of price holds for flour,potatoes,and pork if production is lower than the set budget,and for rice,pork,and eggs if production is higher than the set *** has a significant positive effect on consumption of selfproduced food but with a much greater influence when production is lower than the set budget for all five food *** findings partly support our assumption of mental accounting of self-produced ***,policy implications,and possible future studies are discussed.

关键词： mental accounting food consumption self-produced food agricultural household

A new type of cell related to organ movement for selfing in plants

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National Science Review 2023年第9期10卷 190-203页

作者： Yin-Zheng Wang Yan-Xiang Lin qi Liu Jing Liu Spencer C.h.Barrett State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of Sciences China National Botanical Garden College of Life Sciences University of Chinese Academy of Sciences College of Pharmacy Fujian University of Traditional Chinese Medicine Department of Ecology and Evolutionary Biology University of Toronto

Many plants employ osmotic and hydrostatic pressure to generate movement for survival,but little is known about the cellular mechanisms ***,we report a new cell type in angiosperms termed ’contractile cells’ in the stigmas of the flowering plant Chirita pumila with a much-expanded rough endoplasmic reticulum(RER).Cryo-scanning electron microscopy and transmission electron microscopy analyses revealed that the RER is continuously distributed throughout the entirety of cells,confirmed by endoplasmic reticulum(ER)-specific fluorescent labeling,and is distinct from the common feature of plant *** RER is water-sensitive and extremely elongated with water *** show that the contractile cells drive circadian stigma closing-bending movements in response to day-to-night moisture ***-seq analyses demonstrated that contractile cells have distinct molecular ***,multiple microstructural changes in stigma movements convert an anti-selfing structure into a device promoting selfing—a unique cellular mechanism of reproductive adaptation for uncertain pollination environments.

关键词： stigma movement rough endoplasmic reticulum contractile cells circadian moisture changes reproductive transition

Petrographic and geochemical characterization of seep carbonate from Alaminos Canyon,Gulf of Mexico

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Chinese Science Bulletin 2008年第11期53卷 1716-1724页

作者： FENG Dong ChEN DuoFu qi Liang harry h. ROBERTS Key Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou510640 China Graduate University of Chinese Academy of Sciences Beijing 100049 China State Key Lab of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Coastal Studies Institute Louisiana State University Baton Rouge LA 70803 USA

Seep carbonates were collected from the Alaminos Canyon lease area, Gulf of Mexico. The carbonates are present as slabs and blocks. Bivalve shell and foraminifer are the dominant bioclasts in carbonate. Pores are common and usually filled with acicular aragonite crystals. XRD investigation shows that aragonite is the dominate mineral (98%). Peloids, clotted microfabirc and botryoidal aragonite are de-veloped in carbonate and suggest a genesis linked with bacterial degradation of the hydrocarbons. The δ13C value of bioclasts in carbonate is from-4.9‰ to-0.6‰, indicating that the carbon source is mainly from sea water as well as the small portion incorporation of the seep hydrocarbon. The microcrystalline and sparite aragonite shows the δ13C value from-31.3‰ to-23.4‰, suggesting that their carbon is derived mainly from microbial degradation of crude oil. 14C analyses give the radiocarbon age of about 10 ka. Rare earth elements (REE) analyses of the 5% hNO3-treated solution of the carbonates show that the total REE content of the carbonates is low, that is from 0.752 to 12.725 μg·g-1. The shale-normalized REE patterns show significantly negative Ce anomalies. This suggests that cold seep carbonate is most likely formed in a relatively aerobic environment.

关键词：墨西哥黑金刚石岩相学地球化学特征

Threshold photoelectron-photoion coincidence and its applica-tion to photoionization of molecules using synchrotron radiation

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Chinese Science Bulletin 1997年第10期42卷 809-814页

作者： Gao, h Zhang, YW Sheng, LS qi, F Liu, YM National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei China

PhOTOIONIZATION method is one of the powerful tools for the investigation of the molecular en-ergetic,structure and dynamic *** process of photoionization of a given systeminvolves at least three particles:the absorbe... 详细信息

关键词： threshold photoelectron threshold photoelectron-photoion coincidence synchrotron radiation.

Selective adsorption behavior of ion-imprinted magnetic chitosan beads for removal of Cu(Ⅱ) ions from aqueous solution

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Chinese Journal of Chemical Engineering 2021年第11期34卷 103-111页

作者： Licheng Ma qi Zheng State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Rare Metals and Metallurgy Materials Research Institute General Research Institute for Nonferrous MetalsBeijing 100008China

heavy metal ion is one of the major environmental *** this study,a Cu(Ⅱ)ions imprinted magnetic chitosan beads are prepared to use chitosan as functional monomer,Cu(Ⅱ)ions as template,Fe_(3)O_(4) as magnetic core and epichlorohydrin and glutaraldehyde as crosslinker,which can be used for removal Cu(Ⅱ)ions from *** kinetic study shows that the adsorption process follows the pseudosecond-order kinetic *** adsorption isotherm study shows that the Langmuir isotherm equation best fits for the monolayer adsorption *** selective adsorption properties are performed in Cu(Ⅱ)/Zn(Ⅱ),Cu(Ⅱ)/Ni(Ⅱ),and Cu(Ⅱ)/Co(Ⅱ)binary *** results shows that the ⅡMCD has a high selectivity for Cu(Ⅱ)ions in binary *** mechanism of ⅡMCD recognition Cu(Ⅱ)ions is also *** results show that the ⅡMCD adsorption Cu(Ⅱ)ions is an enthalpy controlled *** absolute value of Dh(Cu(Ⅱ))and DS(Cu(Ⅱ))is greater than Dh(Zn(Ⅱ),Ni(Ⅱ),Co(Ⅱ))and DS(Zn(Ⅱ),Ni(Ⅱ),Co(Ⅱ)),respectively,this indicates that the Cu(Ⅱ)ions have a good spatial matching with imprinted holes on Ⅱ*** FTIR and XPS also demonstrates the strongly combination of function groups on imprinted holes in the suitable space ***,the ⅡMCD can be regenerated and reused for 10 times without a significantly decreasing in adsorption *** information can be used for further application in the selective removal of Cu(Ⅱ)ions from industrial wastewater.

关键词： Ion imprinted techniques Selective recognition Ion-imprinted magnetic chitosan beads Kinetic Thermodynamics

Kinetic roles of vibrational excitation in RF plasma assisted methane pyrolysis

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Journal of Energy Chemistry 2019年第12期28卷 188-197页

作者： Jintao Sun qi Chen School of Mechanical Electronic and Control Engineering Beijing Jiaotong University

A combined experimental and simulational work was carried out in this paper to investigate the kinetic effects of non-equilibrium excitation by direct electron impact on low temperature pyrolysis of Ch4 in a RF dielectric barrier *** attention was placed on the vibrational chemistry of Ch4 and some other important products including h2,C2h2,C2h4,C2h6 and C3h8 largely produced in Ch4/he discharge under an intermediate reduced electric field ranging 51-80 Td.A detailed kinetic mechanism incorporating a set of electron impact reactions,electron-ion recombination reactions,negative ions attachment reactions,charge exchange reactions,reactions involving vibrationally excited molecules and the relaxation process of vibrationally excited species was assembled and experimentally *** modeling results showed a reasonable agreement with the experimentally measured results in terms of Ch4 conversion and products production including C2 hydrocarbons and hydrogen.A linear increasing trend of methane conversion with increasing plasma power input was discovered,which suggested a strong dependence of molecular excitation on energy *** the Ch4/he mole ratio and the reactor temperature play significant roles in Ch4 conversion and major products *** experimental results showed that the selectivity of value-added products C2h4 and h2 keeps essentially unchanged with increasing energy input,mostly because the contribution Ch4 ionization and he excitation effectively compete with vibrational excitation and dissociation of Ch4 molecule with the E/N value *** calculated results showed that the typical relaxation time of vibrational states is comparable to the gas-kinetics time in a Ch4/he discharge mixture,thus the vibrationally excited molecules can significantly accelerate chemical reactions through an effective decrease of activation *** path flux analysis revealed that the vibrationally excited molecules Ch4(v)and h2(v)enhanced

关键词： Non-equilibrium plasma Methane pyrolysis Vibrational excitation Path flux analysis Sensitivity analysis

Astrocytic modulation of potassium under seizures

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Neural Regeneration Research 2020年第6期15卷 980-987页

作者： Fushun Wang Xiaoming qi Jun Zhang Jason hhuang Department of Neurosurgery Baylor Scott&White HealthTempleTXUSA Institute of Brain and Psychological Science Sichuan Normal UniversityChengduSichuan ProvinceChina Department of Neurosurgery PLA General HospitalBeijingChina Department of Surgery Texas A&M University College of MedicineTempleTXUSA

The contribution of an impaired astrocytic K^+ regulation system to epileptic neuronal hyperexcitability has been increasingly recognized in the last decade.A defective K^+ regulation leads to an elevated extracellular K^+ concentration([K^+]o).When[K^+]o reaches peaks of 10-12 mM,it is strongly associated with seizure initiation during hypersynchronous neuronal *** the other hand,reactive astrocytes during a seizure attack restrict influx of K^+ across the membrane both passively and *** addition to decreased K^+ buffering,aberrant Ca^2+ signaling and declined glutamate transport have also been observed in astrogliosis in epileptic specimens,precipitating an increased neuronal discharge and induction of *** review aims to provide an overview of experimental findings that implicated astrocytic modulation of extracellular K^+ in the mechanism of epileptogenesis.

关键词： AQP4 Ca^2+ signaling cell volume connexins epilepsy K^+ buffering mi RNA NKCC pannexin TBI

Using high-resolution aerial images to study gully development at the regional scale in southern China

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International Soil and Water Conservation Research 2020年第2期8卷 173-184页

作者： honghu Liu Georg hormann Bingyu qi qiuxing Yue State Key Lab Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesXinong Rd 26712100YanglingShaanxi ProvincePR China Changjiang River Scientific Research Institute Changjiang Water Resource CommissionNo 23 Huangpuda Street430010WuhanHubei provincePR China Department of hydrology and Water Resources Management Institute of Natural Resource ConservationKiel UniversityOlshausenstr.75D-24098 KielGermany

There are 239,100 gullies in southern China,which cause the degradation of ecological ***,studies on gully development at the regional scale is relatively *** purpose of this study is to analyze the regional gully dynamics and explore how land use and topographic factors affect gully *** data consists of land use maps derived from high-resolution images from 2004 to 2014,and topography maps from a digital elevation model with a pixel size of 8 m×8 m in two 25-km2 study sites of Anxi(AX)and Xingning county(XN).The following results were obtained:(1)AX gullies decreased from 2006 to 2014 while XN first increased from 2004 to 2009,and then decreased from 2009 to *** AX and XN gully area in percentage of the total area ranged from 1%to 3%,which was higher than the average 0.25%of the whole southern China by the artificial survey in 2005.(2)Most of AX and XN gullies occurred along the ridgeline and had the close relationships with the upstream contributing area and slope gradient.(3)New gullies developed on the exposed land and *** lost gullies were converted into forestland and *** fact,most of these gullies were only covered by vegetation,not real *** results proved that gully decreased,but construction of roads and buildings intensified gully ***,these findings reveal that vegetation protection and ecological restoration should be adopted in southern China.

关键词： Digital elevation model Slope gradient Exposed lands Upstream contributing area

ThE PERTURBATION PROBLEM OF AN ELLIPTIC SYSTEM WITh SOBOLEV CRITICAL GROWTh

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Acta Mathematica Scientia 2020年第5期40卷 1391-1404页

作者： qi LI School of Mathematics and Statistics Central China Normal UniversityWuhan 430079China

In this paper,we study the following perturbation problem with Sobolev critical exponen t:{-Δu=(1+εK(x))u^2*-1+α/2*u^a-1v^3+εh(x)u^pP,x∈R^N,-Δu=(1+εQ(x))v^2*-1+β/2*u^B-1+εl(x)u^q,x∈R^N,u>0,v>0,x∈R^N where 0... 详细信息

关键词： perturbation argument finite dimensional reduction method critical exponent