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Tytuł:
Molecular mechanisms of resistance to antifolates, a review
Autorzy:
Banerjee, Debabrata
Ercikan-Abali, Emine
Waltham, Mark
Schnieders, Barbara
Hochhauser, Daniel
Li, Wei
Fan, Jianguo
Gorlick, Richard
Goker, Erdem
Bertino, Joseph
Powiązania:
https://bibliotekanauki.pl/articles/1045204.pdf
Data publikacji:
1995
Wydawca:
Polskie Towarzystwo Biochemiczne
Źródło:
Acta Biochimica Polonica; 1995, 42, 4; 457-464
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Academic and linguistic gains during a semester long study abroad: A cohort case study
Autorzy:
Cai, Wei
Li, Xiangrong
Liu, Meihua
Powiązania:
https://bibliotekanauki.pl/articles/780741.pdf
Data publikacji:
2013-12
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
gain
exchange program
academic
linguistic
Opis:
The present case study investigated university students’ academic and linguistic gains during a semester-long exchange program abroad. Thirty three third-year English majors from a Chinese university answered a battery of questionnaires and 13 of them participated in semi-structured interviews both prior to and after the program. Analyses of the data showed that the participants gained greatly from the exchange program both academically and linguistically. Based on the findings, some implications about exchange programs are discussed.
Źródło:
Studies in Second Language Learning and Teaching; 2013, 3, 4; 505-522
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on peripheral clamping of large-aperture laser transport mirror
Autorzy:
Cao, Tingfen
Liu, Bowu
Wang, Hui
Ni, Wei
Zhang, Jinli
Chen, Xiaojuan
Li, Yingang
Zhou, Hai
Jiang, Xiaodong
Hu, Dongxia
Zhu, Qihua
Powiązania:
https://bibliotekanauki.pl/articles/27310087.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
transport mirror
peripheral clamping
surface distortion
assembly structure
Opis:
This article introduces the study of peripheral clamping for large-aperture laser mirrors in high power laser facilities. Some multi-point clamping schemes were experimentally tested, the results of the experiments show that these schemes cannot meet the technical requirements, and in the simulation analysis, we explain the reason for this phenomenon. It is concluded that the additional bending moment caused by the non-ideal process factors in the multi-point clamping is the main cause for the surface distortion. Based on the above conclusions, we carried out research on minor-point clamping. Experimental verification of the minor-point clamping were done, the results show that the minor-point clamping can meet the requirements of technical indicators in whole process. This work can provide a reference for the design of the large-aperture transport mirror clamping structure, which may be used in huge laser devices and telescopes.
Źródło:
Optica Applicata; 2023, 53, 2; 227--238
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stigmasterol blocks cartilage degradation in rabbit model of osteoarthritis
Autorzy:
Chen, Wei-Ping
Yu, Chong
Hu, Peng-Fei
Bao, Jia-Peng
Tang, Jing-Li
Wu, Li-Dong
Powiązania:
https://bibliotekanauki.pl/articles/1039645.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
matrix metalloproteinases
stigmasterol
osteoarthritis
Opis:
Stigmasterol has been shown exihbit anti-osteoarthritic properties in vitro studies. However, the in vivo effects of stigmasterol on cartilage are still unclear. This study investigated the anti-osteoarthritic properties of stigmasterol on cartilage degradation in a rabbit model of osteoarthritis (OA). Twenty rabbits underwent bilateral anterior cruciate ligament transection (ACLT) to induce OA. Five rabbits were used as normal control. Two weeks after operation, the rabbits were randomly divided into two groups. Each group of 10 rabbits received intra-articular injection with 0.3 ml of stigmasterol in left knees and vehicle in right knees, once weekly. Group 1 was killed 6 weeks after ACLT and 2 were sacrificed 9 weeks after ACLT. The knee joints were assessed by gross morphology, histology and gene expression analysis. We found that expression of genes encoding matrix metalloproteinases (MMPs) was significantly higher while tissue inhibitors of metalloproteinase (TIMP)-1 was significantly lower in the both joints of the two OA groups compared to normal contrals. Stigmasterol reduced the cartilage degradation as assessed by histological analysis and markedly suppressed MMPs expression both in group 1 and group 2. Our results suggest that stigmasterol may be considered as a possible therapeutical agent in the treatment of OA.
Źródło:
Acta Biochimica Polonica; 2012, 59, 4; 537-541
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The development and utilization of bauxite resources in the Guizhou Province and relevant challenges to the ecology and the environment
Rozwój i wykorzystanie zasobów boksytu w prowincji Guizhou oraz istotne wyzwania dla ekologii i środowiska
Autorzy:
Chen, Xiaofu
Li, Xuexian
Wu, Pan
Zha, Xuefang
Liu, Yabin
Wei, Tao
Ran, Wenrui
Powiązania:
https://bibliotekanauki.pl/articles/2173849.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
Guizhou Province
bauxite
development of resources
utilization of resources
ecological environment
counter measures
prowincja Guizhou
boksyt
rozwój zasobów
wykorzystanie zasobów
środowisko ekologiczne
środki zaradcze
Opis:
The environmental problems caused by the development and utilization of mineral resources have become important factors affecting ecological security. Guizhou is a Chinese province with relatively developed paleoweathered sedimentary bauxite deposits, abundant resource reserves, and a long history of mining. And, the demand for bauxite in Guizhou is expected to continue to grow. However, long-term or unreasonable resource development has produced a series of prominent environmental problems, such as the occupation and destruction of land resources and heavy metal pollution in soil and water bodies. Based on the existing research results in China and abroad, this paper analyzes the current situation, distribution characteristics, and development and utilization of bauxite resources in Guizhou to explain the corresponding environmental impacts. The results show that because of the many types and high concentrations of associated elements in bauxite and the high alkalinity, heavy metal components, and radioactive elements in red mud, the development and utilization of bauxite resources are associated with higher environmental risk. And more impact of bauxite mining on regional biodiversity, soil, air, surface water, and groundwater need to be evaluated. This paper also proposes coping strategies or countermeasures of environmental governance and control to achieve the green, sustainable and high-quality development of bauxite-related industries for meeting future environmental requirements.
Problemy środowiskowe spowodowane zagospodarowaniem i wykorzystaniem surowców mineralnych stały się ważnymi czynnikami wpływającymi na bezpieczeństwo ekologiczne. Guizhou to chińska prowincja ze względnie rozwiniętymi osadowymi złożami boksytu, bogatymi rezerwami surowców i długą historią wydobycia. Oczekuje się, że popyt na boksyt w Guizhou będzie nadal rósł. Jednak długoterminowy lub nieracjonalny rozwój wykorzystania zasobów spowodował szereg znaczących problemów środowiskowych, takich jak: zajmowanie i niszczenie zasobów ziemi oraz zanieczyszczenie metalami ciężkimi gleby i zbiorników wodnych. W oparciu o istniejące wyniki badań w Chinach i za granicą, w artykule dokonano analizy obecnej sytuacji, charakterystyki dystrybucji oraz rozwoju i wykorzystania zasobów boksytu w Guizhou, w celu wyjaśnienia odpowiedniego wpływu na środowisko. Wyniki pokazują, że ze względu na wiele rodzajów i wysoką koncentrację towarzyszących pierwiastków w boksycie oraz wysoką alkaliczność, składniki metali ciężkich i pierwiastki radioaktywne w czerwonym szlamie, rozwój i wykorzystanie zasobów boksytu wiążą się z wyższym ryzykiem dla środowiska. Ponadto należy ocenić większy wpływ wydobycia boksytu na regionalną bioróżnorodność, glebę, powietrze, wody powierzchniowe i gruntowe. Niniejsza praca proponuje również strategie radzenia sobie lub środki zaradcze zarządzania i kontroli środowiska w celu osiągnięcia ekologicznego, zrównoważonego i wysokiej jakości rozwoju przemysłu związanego z boksytem dla spełnienia przyszłych wymagań środowiskowych.
Źródło:
Gospodarka Surowcami Mineralnymi; 2022, 38, 2; 5--30
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanical evaluation of tendon connection with novel suture techniques
Autorzy:
Chen, Z.
Wang, J.
Wei, J.- S.
Hou, Z.-Y.
Li, M.
Chen, Q.-X
Powiązania:
https://bibliotekanauki.pl/articles/306902.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ścięgno Achillesa
IFLL
biomechanika
internal fixation with limited loop
Achilles tendon
biomechanics
Opis:
Achilles tendon rupture is a severe injury with poor curative effect due to its anatomical characteristic and mechanical peculiarity. Internal fixation of limited loop (IFLL) with steel-wire has been applied on patients with tendon rupture to fix the broken ends before physical rehabilitation. The purpose of this study is to investigate the biomechanical property and radiological characteristic of such suture technique for the repairment of tendon rupture. Methods: Tendons of pigs’ hint feet were separated for the biomechanical study. Suture surgery was performed according to the protocol of IFLL. Biomechanical Testing Machine was adopted to conduct the biomechanical tensile load examination. The maximal load, elastic modulus and tendon stiffness of the stitched tendons with or without reinforcement were examined. Results: The maximum tensile load of the stitched tendons using IFLL reached 1/4 of the uninjured tendon’s maximum tensile load, indicating that such suture technique is capable of providing enough tension for the ruptured tendon. Surprisingly, tendons fixed with titanium wire showed the highest load tension, which was comparable to the undamaged tendon. Therefore, we found the biomechanical basis of using IFLL in effectively connecting the rupture ends of tendons. Conclusions: In conclusion, we provide biomechanical evidence for the use of IFLL in treatment of Achilles tendon rupture, by providing enough strength for the ankle function. Such suture technique could help the patients with better rehabilitation and reduced in-hospital stay after Achilles tendon injury.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 135-141
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two Gln187 mutants of human soluble APRIL inhibit proliferation of lung carcinoma A549 cells
Autorzy:
Dai, Shuangshuang
Zheng, Yingru
Chen, Bin
Gao, Min
Zhang, Yan
Zhang, Li
Gong, Wei
He, Fengtain
Powiązania:
https://bibliotekanauki.pl/articles/1040492.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
APRIL
Gln187 mutant of sAPRIL
anti-tumor activity
Opis:
Soluble APRIL (sAPRIL), the active form of a proliferation-inducing ligand (APRIL), is implicated in the proliferation of tumor cells. Suppressing APRIL function has been considered as a potential strategy for the therapy of APRIL-associated tumors. In the present study, we generated human sAPRIL and its two mutants, Gln187-D-sAPRIL (Gln187 deleted) and Gly187-sAPRIL (Gln187 replaced by Gly). In vitro experiments showed that the two mutants had similar specific binding capacity to lung carcinoma A549 cells compared to the wild-type sAPRIL, and both, especially Gly187-sAPRIL, exhibited significant antagonistic effect on sAPRIL-induced tumor cell proliferation in a dose-dependent manner, which might be predominantly mediated by blocking sAPRIL-induced MEK and ERK phosphorylation but not p38MAPK or JNK signaling. In vivo experiments with nude mice bearing A549 cell-derived xenograft tumor showed that only the Gly187-sAPRIL mutant could significantly suppress the tumor growth. These results suggest that Gln187 may be a crucial amino acid in APRIL-mediated tumor cell proliferation via the MEK-ERK signaling pathway and that the sAPRIL mutants may serve as novel potential antagonists of APRIL for the therapy of APRIL-associated cancers.
Źródło:
Acta Biochimica Polonica; 2009, 56, 4; 703-710
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on torque ripple suppression of brushless DC motor based on PWM modulation
Autorzy:
Daode, Zhang
Wei, Lingkang
Hu, Xinyu
Zhang, Chupeng
Li, Xuesheng
Powiązania:
https://bibliotekanauki.pl/articles/141390.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC brushless motor
electric propulsion
fuzzy PID control
torque ripple
PWM_ON_PWM modulation
Opis:
Brushless DC motors are often used as the power sources for modern ship electric propulsion systems. Due to the electromagnetic torque ripple of the motor, the traditional control method reduces the drive performance of the motor under load changes. Aiming at the problem of the torque ripple of the DC brushless motor during a noncommutation period, this paper analysis the reasons for the torque ripple caused by pulsewidth modulation (PWM), and proposes a PWM_ON_PWM method to suppress the torque ripple of the DC brushless motor. Based on the mathematical model of a DC brushless motor, this method adopts a double closed-loop control method based on fuzzy control to suppress the torque ripple of the DC brushless motor. The fuzzy control technology is integrated into the parameter tuning process of the proportional–integral–derivative (PID) controller to effectively improve the stability of the motor control system. Under the Matlab/Simulink platform, the response performance of different PID control methods and the torque characteristics of different PWM modulation methods are simulated and compared. The results show that the fuzzy adaptive PID control method has good dynamic response performance. It is verified that the PWM_ON_PWM modulation method can effectively suppress the torque ripple of the motor during non-commutation period, improve the stability of the double closed-loop control system and meet the driving performance of the motor under different load conditions.
Źródło:
Archives of Electrical Engineering; 2019, 68, 4; 843-858
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adptive heading control of underactuated unmanned surface vehicle based on improved backpropagation neural network
Autorzy:
Dong, Zaopeng
Li, Jiakang
Liu, Wei
Zhang, Haisheng
Qi, Shijie
Zhang, Zhengqi
Powiązania:
https://bibliotekanauki.pl/articles/32917278.pdf
Data publikacji:
2023
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
underactuated unmanned surface vehicle
backpropagation neural network controller
heading control
hyperbolic tangent function
Opis:
Aiming at the challenges to the accurate and stable heading control of underactuated unmanned surface vehicles arising from the nonlinear interference caused by the overlay and the interaction of multi interference, and also the uncertainties of model parameters, a heading control algorithm for an underactuated unmanned surface vehicle based on an improved backpropagation neural network is proposed. Based on applying optimization theory to realize that the underactuated unmanned surface vehicle tracks the desired yaw angle and maintains it, the improved momentum of weight is combined with an improved tracking differentiator to improve the robustness of the system and the dynamic property of the control. A hyperbolic tangent function is used to establish the nonlinear mappings an approximate method is adopted to summarize the general mathematical expressions, and the gradient descent method is applied to ensure the convergence. The simulation results show that the proposed algorithm has the advantages of strong robustness, strong anti-interference and high control accuracy. Compared with two commonly used heading control algorithms, the accuracy of the heading control in the complex environment of the proposed algorithm is improved by more than 50%.
Źródło:
Polish Maritime Research; 2023, 1; 54-64
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved linear complexities of the frequency hopping sequences in two optimal sets
Autorzy:
Gao, J.
Li, X.
Wei, Y.
Powiązania:
https://bibliotekanauki.pl/articles/206234.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
frequency hopping sequence
linear complexity
permutation polynominal
optimal set
Opis:
For the anti-jamming purpose, high linear complexity is desired for each frequency hopping sequence in an optimal set. Using a proper power permutation, Wang has shown that an optimal set of frequency hopping sequences with small linear complexity can be transformed into a new optimal set of frequency hopping sequences with large linear complexity. This paper conains two results. First, we extend the result of Wang. A power permutation is only suitable for a special construction of optimal set of frequency hopping sequences, see Wang (2011). However, the power permutation chosen in this paper applies to the general construction of optimal set of frequency hopping sequences. Second, by using a binomial permutation polynomial P(x), which is different from those permutations used before, we obtain a novel optimal set of frequency hopping sequences with high linear complexity from an optimal set of frequency hopping sequences with small linear complexity. By counting the number of different roots in the sequence representation, we determine the linear complexities of the frequency hopping sequences in two optimal sets transformed by the power permutation or binomial permutation.
Źródło:
Control and Cybernetics; 2012, 41, 2; 317-334
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on communication emitter identification based on semi-supervised dimensionality reduction in complex electromagnetic environment
Autorzy:
Ge, Wei
Qi, Lin
Tong, Lin
Zhu, Jun
Zhang, Jing
Zhao, Dongyang
Li, Ke
Powiązania:
https://bibliotekanauki.pl/articles/27311449.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
communication emitter identification
feature extraction
dimensionality reduction
VMD
ESDA
variational mode decomposition
exponential semi-supervised discriminant analysis
identyfikacja emitera komunikacyjnego
ekstrakcja cech
redukcja wymiarowości
rozkład w trybie wariacyjnym
analiza dyskryminacyjna wykładnicza półnadzorowana
Opis:
The individual identification of communication emitters is a process of identifying different emitters based on the radio frequency fingerprint features extracted from the received signals. Due to the inherent non-linearity of the emitter power amplifier, the fingerprints provide distinguishing features for emitter identification. In this study, approximate entropy is introduced into variational mode decomposition, whose features performed in each mode which is decomposed from the reconstructed signal are extracted while the local minimum removal method is used to filter out the noise mode to improve SNR. We proposed a semi-supervised dimensionality reduction method named exponential semi-supervised discriminant analysis in order to reduce the high-dimensional feature vectors of the signals, and LightGBM is applied to build a classifier for communication emitter identification. The experimental results show that the method performs better than the state-of-the-art individual communication emitter identification technology for the steady signal data set of radio stations with the same plant, batch and model.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e145766
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Triplex qRT-PCR with specific probe for synchronously detecting Bovine parvovirus, bovine coronavirus, bovine parainfluenza virus and its applications
Autorzy:
Geng, J.
Niu, Y.
Wei, L.
Li, Q.
Gong, Z.
Wei, S.
Powiązania:
https://bibliotekanauki.pl/articles/2087278.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bovine parvovirus
bovine coronavirus
bovine parainfluenza virus
qRT-PCR
specificity
sensitivity
Źródło:
Polish Journal of Veterinary Sciences; 2020, 23, 4
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on path optimization for multimodal transportation of hazardous materials under uncertain demand
Autorzy:
Han, Wei
Chai, Huo
Zhang, Jianpeng
Li, Yuanping
Powiązania:
https://bibliotekanauki.pl/articles/27311810.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
hazardous materials
multimodal transport
routing optimization
fuzzy random numbers
NSGA-II
materiały niebezpieczne
transport multimodalny
optymalizacja tras
Opis:
In the process of long-distance and large-volume transportation of hazardous materials (HAZMAT), multimodal transportation plays a crucial role with its unique advantages. In order to effectively reduce the transportation risk and improve the reliability of transportation, it is particularly important to choose a suitable transportation plan for multimodal transport of HAZMAT. In this paper, we study the transportation of HAZMAT in multimodal transport networks. Considering the fluctuation in demand for HAZMAT during the actual transportation process, it is difficult for decision makers to obtain the accurate demand for HAZMAT orders in advance, leading to uncertainty in the final transportation plan. Therefore, in this paper, the uncertain demand of HAZMAT is set as a triangular fuzzy random number, and a multi-objective mixed integer linear programming model is established with the objective of minimizing the total risk exposure population and the total cost in the transportation process of HAZMAT. In order to facilitate the solution of the model, we combined the fuzzy random expected value method with the fuzzy random chance constraint method based on credibility measures to reconstruct the uncertain model clearly and equivalently, and designed a non-dominated sorting genetic algorithm (NSGA-Ⅱ) to obtain the Pareto boundary of the multi-objective optimization problem. Finally, we conducted a numerical example experiment to verify the rationality of the model proposed in this paper. The experimental results indicate that uncertain demand can affect the path decision-making of multimodal transportation of HAZMAT. In addition, the confidence level of fuzzy random opportunity constraints will have an impact on the risk and economic objectives of optimizing the multimodal transportation path of HAZMAT. When the confidence level is higher than 0.7, it will lead to a significant increase in transportation risks and costs. Through sensitivity analysis, it can provide useful decision-making references for relevant departments to formulate HAZMAT transportation plans.
Źródło:
Archives of Transport; 2023, 67, 3; 91--104
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of sound on standing postural stability in the elderly with and without knee osteoarthritis
Autorzy:
Hengsomboon, Pichaya
Hiengkaew, Vimonwan
Hsu, Wei-Li
Bovonsunthonchai, Sunee
Powiązania:
https://bibliotekanauki.pl/articles/306232.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
starzenie się
choroba zwyrodnieniowa
staw kolanowy
ageing
auditory
balance
knee osteoarthritis
sensory reweighting
Opis:
The aim of the study was to investigate the influence of sound on standing postural control in the elderly with and without knee osteoarthritis (knee-OA). Methods: Twenty-six elderly with knee-OA and 26 elderly without knee-OA who matched the age and height participated in this study. The standing postural stability was assessed by the 3D motion analysis system. Four testing conditions of the combination of sound (no sound and white noise sound) and surface (firm and soft surfaces) were tested three times with eyes closed for 30 sec. Postural stability variables included the standard deviation and velocity of the centre of pressure, the total body centre of mass, and centre of the head along the antero-posterior (AP) and medio-lateral (ML) directions. Results: Statistical significant reductions of all variables along ML direction were found in the elderly without a knee-OA in the presence of sound during standing on a firm surface. No significant effect of sound was found in the elderly with the knee-OA during standing on a firm surface. In the standing on a soft surface, both groups demonstrated no significant effect of sound on all postural stability variables. Conclusions: Application of sound improved the standing postural stability in the frontal plane for the elderly without knee-OA. However, the effect of sound was limited in standing on a soft surface for both elderly with and without knee-OA.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 3; 99-108
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mineral investment risk assessment of host countries based on a cloud matter-element model
Ocena ryzyka inwestycji w minerały w krajach przyjmujących w oparciu o model chmury materii i pierwiastka
Autorzy:
Hou, Jie
Li, Guoqing
Ling, Jiahong
Chen, Lianyun
Zhao, Wei
Sheng, Baoli
Powiązania:
https://bibliotekanauki.pl/articles/27311628.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
mineral investment
cloud matter element model
investment risk
risk assessment
inwestycje w surowce mineralne
model materii chmury
ryzyko inwestycyjne
ocena ryzyka
Źródło:
Gospodarka Surowcami Mineralnymi; 2023, 39, 4; 23--48
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
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