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Wyszukujesz frazę "Liu, W.-P." wg kryterium: Wszystkie pola


Tytuł:
Toluene Mono-nitration in a Semi-batch Reactor
Autorzy:
Chen, L. P.
Chen, W. P.
Liu, Y.
Peng, J. H.
Liu, R. H.
Tematy:
toluene mono-nitration
apparent activation energy
semi-batch reaction
thermal hazard
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:
https://bibliotekanauki.pl/articles/358853.pdf  Link otwiera się w nowym oknie
Opis:
Toluene mono-nitration in a semi-batch reactor was investigated with reaction calorimeter (RC1). The mixed acid HNO3/H2SO4/H2O (wt%) was used in proportion 13/66/21, which is similar to industrial parameters. The exothermic rates at different reaction temperatures were compared, and then the curves of heat generation rate after dosing were analyzed. The Maximal Temperature attainable by runaway of the desired Synthetic Reaction (MTSR) under different conditions were calculated for the course hazard evaluation. The results showed that the average reaction heat of mono-nitration was between 169.07~177.11 kJ mol-1, and the special heat of reactant was about 2 kJ kg-1 K-1. Average Ea of second order kinetic was about 30 kJ mol-1, and reaction rate was 10-4 mol s-1 l-1 order of magnitude when the strength of sulphuric acid was about 73.5%. It was also found that when temperature or stirring speed increases, the potential heat accumulation decreases.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hierarchy of plasticity traits in responses of Quercus aliena to light conditions and water availability
Autorzy:
Xu, N.
Wang, R.
Liu, J.
Lu, P.
Guo, W.
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Powiązania:
https://bibliotekanauki.pl/articles/41404.pdf  Link otwiera się w nowym oknie
Opis:
This study aimed to investigate plasticity of different plant traits to varied light and water availability. A greenhouse experiment was conducted with Quercus aliena seedlings with two light and four soil water levels. Plant traits related to leaf physiology, morphology, anatomy, and biomass production were determined. The results showed that plant size had significant effects on leaf area, leaf number, shoot height, basal diameter and crown area. After excluding the influence of plant size, water treatment had stronger effects on plants compared to light levels, and their interaction effect was significant. The limited water supply significantly inhibited leaf photosynthetic rate and the fluorescence efficiency under high light. However, leaves submitted to moderate drought stress showed enhanced fluorescence activity under shade condition. Grand plasticity of leaf physiology and growth was the highest, followed by biomass allocation and leaf morphology, and lastly anatomy, and this ranking did not change as resources considered. Among the variables, leaf petiole length, chlorophyll content and leaf area could be selected as candidates for estimation of species’ plasticity to water, light and their interaction, respectively. Therefore, our results suggested that there was a hierarchy existing among traits plasticity in Q. aliena, and supported the aboveground facilitation hypothesis that shade could alleviate the adverse effect of drought.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robotic rehabilitation of stroke patients using an expert system
Autorzy:
Natarajan, P.
Agah, A.
Liu, W.
Tematy:
rehabilitation robots
intelligent systems
human-robot interaction
expert systems
stroke therapy
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:
https://bibliotekanauki.pl/articles/384968.pdf  Link otwiera się w nowym oknie
Opis:
Approximately 50 to 60 percent of the more than five million stroke survivors are moderately or minimally impaired, and may greatly benefit from rehabilitation. There is a strong need for cost-effective, long-term rehabilitation solutions, which require the therapists to provide repetitive movements to the affected limb. This is a suitable task for specialized robotic devices; however, with the few commercially available robots, the therapists are required to spend a considerable amount of time programming the robot, monitoring the patients, analyzing the data from the robot, and assessing the progress of the patients. This paper focuses on the design, development, and clinically testing an expert systembased post-stroke robotic rehabilitation system for hemiparetic arm. The results suggest that it is not necessary for a therapist to continuously monitor a stroke patient during robotic training. Given the proper intelligent tools for a rehabilitation robot, cost-effective long-term therapy can be delivered with minimal supervision.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena obciążenia mięśniowo-szkieletowego w aspekcie wieku pracownika
Evaluating musculoskeletal load and the aging of employees
Autorzy:
Bartuzi, P.
Roman-Liu, D.
Tematy:
obciążenie mięśniowo-szkieletowe
musculoskeletal system load
Pokaż więcej
Wydawca:
Centralny Instytut Ochrony Pracy
Powiązania:
https://bibliotekanauki.pl/articles/181453.pdf  Link otwiera się w nowym oknie
Opis:
W artykule przedstawiono zjawisko starzenia się społeczeństwa oraz związane z tym problemy, a także omówiono wpływ starzenia się na procesy zachodzące w mięśniach. Zaprezentowano także sposób oceny obciążenia i zmęczenia układu mięśniowo-szkieletowego, z zastosowaniem elektromiografii powierzchniowej (EMG), uwzględniającej wiek i płeć pracownika.
This article discusses the phenomenon of the aging society and related problems as well as the impact of aging on processes taking place in human muscles. It also presents a method of evaluating musculoskeletal load and fatigue with the use of surface electromyography (EMG), taking into account the worker's age and gender.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen sulfide is involved in the chilling stress response in Vitis vinifera L.
Autorzy:
Fu, P.
Wang, W.
Hou, L.
Liu, X.
Tematy:
hydrogen sulphide
chilling stress
stress response
Vitis vinifera
Pokaż więcej
Wydawca:
Polskie Towarzystwo Botaniczne
Powiązania:
https://bibliotekanauki.pl/articles/56519.pdf  Link otwiera się w nowym oknie
Opis:
Hydrogen sulfide (H2S) is an important signaling molecule involved in several stress-resistance processes in plants, such as drought and heavy metal stresses. However, little is known about the roles of H2S in responses to chilling stress. In this paper, we demonstrated that chilling stress enhance the H2S levels, the H2S synthetase (L-/D-cysteine desulfhydrase, L/DCD) activities, and the expression of L/DCD gene in Vitis vinifera L. ‘F-242’. Furthermore, the seedlings were treated with sodium hydrosulfide (NaHS, a H2S donor) and hypotaurine (HT, a H2S scavenger) at 4°C to examine the effects of exogenous H2S on grape. The results revealed that the high activity of superoxide dismutase and enhanced expression of VvICE1 and VvCBF3 genes, but low level of superoxide anion radical, malondialdehyde content and cell membrane permeability were detected after addition of NaHS. In contrast, HT treatment displayed contrary effect under the chilling temperature. Taken together, these data suggested that H2S might be directly involved in the cold signal transduction pathway of grape.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obecna sytuacja i przyszły trend finansów internetowych w Chinach
Present situation and future trend of internet finance in China
Autorzy:
Liu, Jiamin
Opis:
Finanse internetowe to forma finansowa, która łączy w sobie idee i technologię internetową. Główne modele biznesowe rynku finansów internetowych w Chinach obejmują płatności przez strony trzecie, pożyczki sieciowe P2P, zarządzanie finansami online, finansowanie społecznościowe i tak dalej. Finanse internetowe, jako nowy, rozwijający się obecnie biznes, obejmują zróżnicowane dziedziny, które nadal wymagają rozpoznania, zrozumienia i zbadania. Finanse internetowe mają zarówno pozytywny, jak i negatywny wpływ na chińską gospodarkę. W połączeniu z obecną rzeczywistością, niniejsza praca jest próbą wprowadzenia historii finansów internetowych w Chinach, analizy obecnej sytuacji finansów internetowych, omówienia problemów występujących w procesie rozwoju oraz przedstawienia prognozy ich przyszłego trendu rozwojowego w celu promowania uporządkowany rozwój finansów internetowych.Słowa kluczowe: finanse internetowe, sytuacja bieżąca, istniejące problemy, płatność zewnętrzna, pożyczka w sieci P2P, zarządzanie finansami online, crowdfunding
Internet finance is a financial form that combines Internet ideas and technology. The main business models of Internet Finance market in China include Third-party payment, P2P network loan, online financial management, crowdfunding and so on. As a new rising business nowadays, Internet finance has diversified fields which are still needed to be recognized, understood and studied. Internet finance has both positive and negative impact on China economy. Combined with the current reality, this thesis attempts to introduce the history of internet finance in China, analyze the current situation of internet finance, discuss the problems existing in the development process and puts forward the prediction of its future development trend in order to promote the orderly development of internet finance.Keywords: Internet finance,current situation, existing problems, third-party payment, P2P network loan, online financial management, crowdfunding
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Laboratory investigation of self-healing properties on geosynthetic clay liners with flaw
Autorzy:
Zhang, G.-W.
Zhang, H.-Y.
Wang, J.-F.
Zhou, L.
Liu, P.
Jiang, X.
Tematy:
landfills
geosynthetic clay liner
self healing
hydraulic conductivity
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/204652.pdf  Link otwiera się w nowym oknie
Opis:
The objective of this paper is to evaluate the self- healing properties of a commercially-available geosynthetic clay liner (GCL) using flexible-wall permeameter. The GCLs are produced by the same factory, but the contents of bentonite are different. Also the hydraulic conductivities (HC) of GCLs with no defect are different. In this study, specimens were completely saturated under the backpressure of 20 kPa before the test. Permeability tests were performed on GCL specimens with penet rating flaw and also on specimens permeated with distilled water and CaCl2 solutions. The test results were presented and discussed. Experimental results showed that the GCL with penetrating flaw did not exhibit complete self-healing in the case of flaw. After 120 days, the hydraulic conductivity increased by approximately an order of magnitude. In addition, CaCl2 solutions had a significant influence on the hydraulic conductivity. The research findings might be of interest to researchers and engineers who design liners for landfills and other liquid containment facilities.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hierarchical inferential method for indoor scene classification
Autorzy:
Jiang, J.
Liu, P.
Ye, Z.
Zhao, W.
Tang, X.
Tematy:
indoor scene classification
semantic hierarchical structure
rule based inference
Markov logic network
struktura hierarchiczna
regułowy system wnioskowania
sieć logiczna Markova
Pokaż więcej
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:
https://bibliotekanauki.pl/articles/330842.pdf  Link otwiera się w nowym oknie
Opis:
Indoor scene classification forms a basis for scene interaction for service robots. The task is challenging because the layout and decoration of a scene vary considerably. Previous studies on knowledge-based methods commonly ignore the importance of visual attributes when constructing the knowledge base. These shortcomings restrict the performance of classification. The structure of a semantic hierarchy was proposed to describe similarities of different parts of scenes in a fine-grained way. Besides the commonly used semantic features, visual attributes were also introduced to construct the knowledge base. Inspired by the processes of human cognition and the characteristics of indoor scenes, we proposed an inferential framework based on the Markov logic network. The framework is evaluated on a popular indoor scene dataset, and the experimental results demonstrate its effectiveness.
Dostawca treści:
Biblioteka Nauki
Artykuł

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