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Daytime-nighttime variations in the concentration of PM_(0.1) carbonaceous particles during a biomass fire episode in Chiang Mai,Thailand

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Particuology 2024年第4期87卷 316-324页

作者： Worradorn Phairuang Thaneeya Chetiyanukornkul Phuchiwan Suriyawong Sotasing Ho Phakphum Paluang Masami Furuuchi Muhammand Amin Mitsuhiko Hata Faculty of Gesciences and CivilEngineering Institute of Science and Enginering Kanazawa UniverityKanazawaIshkawa92192Japan Department of Geography Faculty of Social SciencesChiang Mai UniversityMuangChiang Mai 50200Thailand Department of Biology Faculty of ScienceChiang Mai UniversityMuangChiang Mai50200Thailand Research Unit for Eergyonomics and Eological Management Multidisciplinary Research Insttute Chiang Mai UniversityChiang Mai50200Thailand Management and Development Training Program Office National Institute of ScienceTechnology and Innovation120601Cambodia Faculty of Engineering Maritim University of Raja Ali HajTanjung PinangKepulauan Riau29115Indonesia

Carbonaceous aerosols affect air quality adversely,affect global warming,and human ***,our understanding of the impact of ultrafine(PM_(0.1))carbonaceous particulate matter is incomplete,particularly the effects during haze *** study monitored diurnal variations in PM_(0.1) in Chiang Mai,Thailand,from March to April *** investigated carbonaceous PM_(0.1) collected by an ambient nano-sampler and evaluated their effect by using a carbon analyzer(IMPROVE_TOR).The results showed that burning large open areas in the dry season was crucial for increasing the particle mass concentration because of the large open burnings that occurred in this *** majority of biomass fires near the sampling site occurred during the night,which would allow more particles to be released thus resulting in higher concentrations of PM_(0.1).Hence,the release of PM_(0.1) during the night would obviously result in higher concentrations than that during the *** the eight carbon profiles,organic carbon 3(OC3)was predicted to be a marker of biomass *** carbon indices displayed that PM_(0.1) was influenced by biomass burning both daytime and *** findings reported herein should be of great impor-tance in terms of establishing biomass burning control policies for mitigating heavy haze pollution in Thailand and elsewhere.

关键词： Biomass burning Carbon Forest fires Nanoparticles Ultrafine particles

ON HYPONORMAL WEIGHTED SHIFT

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Chinese Annals of Mathematics 1984年第1期5卷 101-108页

作者：孙顺华 Sichuan univerity

It is shown in this paper that the necessary condition that a hyponormal weightedunilateral shift of norm one be unitarily equivalent to a Toeplitz operator is that theassociated weights{an}0- must stisfy 1-丨an丨2=（1-丨a0丨2）n+1 n≥*** a consequence weobtain that the answer to Abrahamse’s Problem 3 is that the Bergman shift is not unitarilyequivalent to a Toeplitz operator.

关键词： ON HYPONORMAL WEIGHTED SHIFT

INTERIOR SPACETIME FOR THE QUANTUM BLACK HOLE AND ITS HOMOMORPHIC MAP

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Science in China,Ser.A 1986年第8期29卷 880-888页

作者：朱世昌 Department of Physics Shanghai Teachers univerity

The quantum gravitational effect in the Planck area is discussed for the dynamical and static cases. The interior metric of the quantum black hole is obtained. We prove the existance of the singularity-free quantum bl... 详细信息

关键词： INTERIOR SPACETIME FOR THE QUANTUM BLACK HOLE AND ITS HOMOMORPHIC MAP IT 占一

FURTHER APPLICATIONS OF POLAR COORDINATES IN C^n

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Acta Mathematica Scientia 2011年第1期31卷 1-7页

作者：余家荣 School of Mathematics and Statistics Wuhan Univerity

Simplify the proof on the domain of convergence of multiple power series and consider the case where some of z1, …, zn are contained only in a finite number of terms of the series. Obtain some results on holomorphic ... 详细信息

关键词： Polar coordinates in Cn multiple power series and holomorphic functions in Cn

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The Models of Modern Human Origins:Eastern Perspective

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Journal of the Chinese Nation Studies 2023年第4期2卷 149-176页

作者： Fei PENG School of Ethnology and Sociology Minzu Univerity of ChinaBeijing

The origin of modern humans is one of the fundamental scientific questions that has been widely debated in the international academic *** the 1980s,the discussion on this issue has formed two opposing camps:the""Out of Africa"hypothesis and the"Multiregional Evolution"*** the continuous accumulation of new materials and rapid technological advancements in the new century,there have been significant adjustments in the debate over the origin models of modern humans,with materials from the East Asia playing an increasingly important *** article reviews the major hypotheses and models regarding the origin of modern humans and the evolution of modern behavior,tracing their sources,history,and *** also provides a comprehensive overview of some of the latest archaeological discoveries and research ***,it discusses the motives and directions for adjusting the models of modern human origins and behavioral evolution,emphasizing the importance of considering a vast amount of archaeological evidence in the discussion of various models and reflecting on the cultural implications of"modernity".The article calls for increased investment in research on the origin of modern humans in China and emphasizes the need to provide a solid Eastern perspective for discussing modern human origin models.

关键词： Human Origins and Evolution Modern Humans Behavioral Modernity Eastern Perspective

Assessment of Compliance to Building Energy Efficiency Strategies in the Development of Housing Estates in FCC, Abuja Nigeria

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Open Journal of Energy Efficiency 2023年第2期12卷 36-48页

作者： Irene Amahagbor Macaulay Joshua Innocent Magaji Innocent Ehiaguina Bello Abugu Nkechinyere Anthonia Geography Department Nasarawa State Univerity Kefi Nigeria NASRDA Abuja Nigeria Institute for Built Environment Nasarawa State Univerity Kefi Nigeria

Compliance to local energy efficiency strategies can significantly reduce energy consumption in buildings and promote sustainability. However, Nigeria Building Energy Efficiency Code (BEEC) seems to be just paper work without enforcement or compliance. Assessment of Compliance to Green Building Energy Efficiency Strategies in the Development of Housing Estates in FCC, Abuja Nigeria was carried out. The compliance of estate buildings to BEEC in the study area was assessed;and the aspects of the building energy efficiency strategies with more compliance were determined. Data were mainly from primary sources such as questionnaire survey, interview with key informants and observation. The study population included all estate developers and building construction professionals. Data were gathered from one hundred and fifty (150) building professionals through questionnaire administration. Data collected were analysed using Z score and ANOVA and presented in tables. Results show that only 18% of respondents agreed that building complied with BEEC, and the Z score for positive affirmation is below average score. There is a significant difference in the integration of different energy efficient management strategies in the estates’ construction at 95% confidence level. The integration of measures such as window to wall ratio and window shading’ were significantly higher than other BEEC strategies such as roof insulation and minimal air condition unit (≤EER/COP of 2.8). Thus, the development of estates in FCC Abuja did not achieve energy efficiency.

关键词： Energy Efficiency Estate Green Building Compliance Housing

Semantic segmentation of landcover for cropland mapping and area estimation using Machine Learning techniques

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Data Intelligence 2023年第2期5卷 370-387页

作者： Surabhi Lingwal Komal Kumar Bhatia Manjeet Singh Computer Science&Engineering G B Pant Institute of Engineering&TechnologyPauri Garhwal246194UttarakhandIndia Computer Engineering J C Bose Univerity of Science&TechnologyYMCAFaridabad121006HaryanaIndia

The paper has focussed on the global landcover for the identification of cropland *** growth and rapid industrialization are somehow disturbing the agricultural lands and eventually the food production needed for human *** agricultural land monitoring requires proper management of land *** paper has proposed a method for cropland mapping by semantic segmentation of landcover to identify the cropland boundaries and estimate the cropland areas using machine learning *** process has initially applied various filters to identify the features responsible for detecting the land boundaries through the edge detection *** images are masked or annotated to produce the ground truth for the label identification of croplands,rivers,buildings,and *** selected features are transferred to a machine learning model for the semantic segmentation *** methodology has applied Random Forest,which has compared to two other techniques,Support Vector Machine and Multilayer perceptron,for the semantic segmentation *** dataset is composed of satellite images collected from the QGIS *** paper has derived the conclusion that Random forest has given the best result for segmenting the image into different regions with 99%training accuracy and 90%test *** results are cross-validated by computing the Mean loU and kappa coefficient that shows 93%and 69%score value respectively for Random Forest,found maximum among *** paper has also calculated the area covered under the different segmented ***,Random Forest has produced promising results for semantic segmentation of landcover for cropland mapping.

关键词： Croplands Semantic Segmentation Machine Learning Random Forest Mask filters Edge detection Supportvectormachine

Effects of orientation and distance of goats on blast lung injury characteristics on a plateau above 4500-meter

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Chinese Journal of Traumatology 2023年第3期26卷 139-146页

作者： Zhao-Xia Duan Guan-Hua Li Jie-Yuan Zhang Meng-Sheng Deng Kui-Jun Chen Liang-Chao Zhang Xiang-Yun Cheng Jing Chen Guang-Ming Yang Jian-Min Wang Deparment of Weapon Boct Assessment Research Institute of SurgeyDaping HospitalAmy Medical Univerity Chongqing400042China State Key Laboratory of Trauma Burn and Combined InjuryArmy Medical UniversityChongqing400038China

Purpose:High explosives are used to produce blast waves to study their biological *** lungs are considered as the critical target organ in blast-effect *** degree of lung hemorrhaging is related to both the explosive power and the increased lung *** studied the characteristics of the biological effects from an air explosion of a thermobaric bomb in a high-altitude environment and the lethality and lung injury severity of goats in different orientations and ***:Goats were placed at 2.5,3,4,and 5 m from the explosion center and exposed them to an air blast at an altitude of 4700-meter.A group of them standing oriented to the right side and the other group seated facing the explosion center *** lung injuries were quantified according to the percentage of surface area contused,and using the pathologic severity scale of lung blast injury(PSSLBI)to score the 4 injury categories(slight,moderate,serious and severe)as 1,2,3,and 4,*** lung coefficient(lung weight[g]/body weight[kg])was the indicator of pulmonary edema and was related to lung injury *** overpressure data were collected using blast test devices placed at matching locations to represent loadings to *** statistical analyses were performed using SPSS,version 26.0,statistical software(SPSS,Inc.,Chicago,IL,USA).Results:In total,127 goats were involved in this ***-side-standing goats had a significantly higher mortality rate than those seated vertical-facing(p<0.05).At the 2.5 m distance,the goat mortality was nearly 100%,whereas at 5 m,all the goats *** injuries of the right-side-standing goats were 1-2 grades more serious than those of seated goats at the same distances,the scores of PSSLBI were significantly higher than the seated vertical-facing goats(p<0.05).The lung coefficient of the right-side-standing goats were significantly higher than those of seated vertical-facing(p<0.05).Mortality,PSSLBI,and the lung coeffici

关键词： Blast injuries Lung injury Plateau

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Effects of cyhalothrin on the transient outward potassium current in central neurons of Helicoverpa armigera

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Insect Science 2006年第1期13卷 13-17页

作者： YONG WANG BING-JUN HE QIANG ZHAO ZHI LIANG AN-XI LIU College of Life Science Nankai Univerity Tianjin China

The effects of cyhalothrin on the transient outward potassium current in central neurons of Helicoverpa armigera were studied by using the patch clamp techniques. The results showed that before using cyhalothrin （10.5 mmol/L）, activation potential was approximately -40 mV, after application of the drug, the activation potential shifted roughly 10 mV to the negative potential direction, so channels can be activated more easily. Before and after cyhalothrin application, the change of current amplitude was insignificant. The value of V1/2 and k of activation curves did not change significantly, however, the V1/2 of the inactivation curves changed significantly. Inactivation curves significantly shifted to a negative direction, so that inactivation of the channels was hastened. It is indicated that there may exit a primary way in which cyhalothrin provides neurotoxicity to the nervous system through the regulation of activation potentials and inactivation state of IA channels.

关键词： cyhalothrin Helicoverpa armigera patch clamp potassium channel