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Article ; Online: Scale-invariant sensitivity for multi-purpose water reservoirs management with temporal scale-dependent modeling

Ren, Kang / Bai, Tao / Huang, Qiang

Journal of Environmental Management. 2023 Aug., v. 339 p.117862-

2023

Abstract: High-resolution temporal data (e.g., daily) is valuable for the decision-making of water resources management because it more accurately captures fine-scale processes and extremes than the coarse temporal data (e.g., weekly or monthly). However, many ... ...

Abstract	High-resolution temporal data (e.g., daily) is valuable for the decision-making of water resources management because it more accurately captures fine-scale processes and extremes than the coarse temporal data (e.g., weekly or monthly). However, many studies rarely consider this superior suitability for water resource modeling and management; instead, they often use whichever data is more readily available. So far, no comparative investigations have been conducted to determine if access to different time-scale data would change decision-maker perceptions or the rationality of decision making. This study proposes a framework for assessing the impact of different temporal scales on water resource management and the performance objective's sensitivity to uncertainties. We built the multi-objective operation models and operating rules of a water reservoir system based on daily, weekly, and monthly scales, respectively, using an evolution multi-objective direct policy search. The temporal scales of the input variables (i.e., streamflow) affect both the model structures and the output variables. In exploring these effects, we reevaluated the temporal scale-dependent operating rules under uncertain streamflow sets generated from synthetic hydrology. Finally, we obtained the output variable's sensitivities to the uncertain factors at different temporal scales using the distribution-based sensitivity analysis method. Our results show that water management based on too coarse resolution might give decision makers the wrong perception because the effect of actual extreme streamflow process on the performance objectives is ignored. The streamflow uncertainty is more influential than the uncertainty associated with operating rules. However, the sensitivities are characterized by temporal scale invariance, as the differences of the sensitivity between different temporal scales are not obvious over the uncertainties in streamflow and thresholds. These results show that water management should consider the resolution-dependent effect of temporal scales for balancing modeling complexity and computational cost.
Keywords	decision making ; environmental management ; issues and policy ; stream flow ; temporal variation ; uncertainty ; water management ; water reservoirs ; Temporal scale ; Water resource management ; Sensitivity analysis ; Uncertainty analysis
Language	English
Dates of publication	2023-08
Publishing place	Elsevier Ltd
Document type	Article ; Online
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2023.117862
Database	NAL-Catalogue (AGRICOLA)

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Article: [Research Progress of Carboxymethyl Chitosan-Based Haemostatic Materials and Their Haemostatic Mechanism --Review].

Ren, Kang / Wu, Li-Hao / Xu, Ling

Zhongguo shi yan xue ye xue za zhi

2023 Volume 31, Issue 3, Page(s) 911–915

Abstract: Effective haemostatic materials can quickly control bleeding and achieve the purpose of saving patients' lives. In recent years, chitosan-based haemostatic materials have shown good haemostatic effects, but their application is limited because chitosan ... ...

Abstract	Effective haemostatic materials can quickly control bleeding and achieve the purpose of saving patients' lives. In recent years, chitosan-based haemostatic materials have shown good haemostatic effects, but their application is limited because chitosan is almost insoluble in water. Carboxymethyl chitosan-based haemostatic materials can promote hemostasis by activating red blood cells and aggregating platelets. In addition, carboxymethyl chitosan can bind with Ca
MeSH term(s)	Humans ; Hemostatics ; Chitosan/pharmacology ; Hemostasis ; Blood Coagulation/physiology ; Hemorrhage
Chemical Substances	Hemostatics ; Chitosan (9012-76-4)
Language	Chinese
Publishing date	2023-03-31
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	2404306-0
ISSN	1009-2137
ISSN	1009-2137
DOI	10.19746/j.cnki.issn.1009-2137.2023.03.044
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Article ; Online: Scale-invariant sensitivity for multi-purpose water reservoirs management with temporal scale-dependent modeling.

Ren, Kang / Bai, Tao / Huang, Qiang

Journal of environmental management

2023 Volume 339, Page(s) 117862

Abstract	High-resolution temporal data (e.g., daily) is valuable for the decision-making of water resources management because it more accurately captures fine-scale processes and extremes than the coarse temporal data (e.g., weekly or monthly). However, many studies rarely consider this superior suitability for water resource modeling and management; instead, they often use whichever data is more readily available. So far, no comparative investigations have been conducted to determine if access to different time-scale data would change decision-maker perceptions or the rationality of decision making. This study proposes a framework for assessing the impact of different temporal scales on water resource management and the performance objective's sensitivity to uncertainties. We built the multi-objective operation models and operating rules of a water reservoir system based on daily, weekly, and monthly scales, respectively, using an evolution multi-objective direct policy search. The temporal scales of the input variables (i.e., streamflow) affect both the model structures and the output variables. In exploring these effects, we reevaluated the temporal scale-dependent operating rules under uncertain streamflow sets generated from synthetic hydrology. Finally, we obtained the output variable's sensitivities to the uncertain factors at different temporal scales using the distribution-based sensitivity analysis method. Our results show that water management based on too coarse resolution might give decision makers the wrong perception because the effect of actual extreme streamflow process on the performance objectives is ignored. The streamflow uncertainty is more influential than the uncertainty associated with operating rules. However, the sensitivities are characterized by temporal scale invariance, as the differences of the sensitivity between different temporal scales are not obvious over the uncertainties in streamflow and thresholds. These results show that water management should consider the resolution-dependent effect of temporal scales for balancing modeling complexity and computational cost.
MeSH term(s)	Water ; Uncertainty ; Water Resources ; Water Supply ; Hydrology/methods
Chemical Substances	Water (059QF0KO0R)
Language	English
Publishing date	2023-04-13
Publishing country	England
Document type	Journal Article
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2023.117862
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Article ; Online: Recognition of freezing of gait in Parkinson's disease based on combined wearable sensors.

Ren, Kang / Chen, Zhonglue / Ling, Yun / Zhao, Jin

BMC neurology

2022 Volume 22, Issue 1, Page(s) 229

Abstract: Freezing of gait is a common gait disorder among patients with advanced Parkinson's disease and is associated with falls. This paper designed the relevant experimental procedures to obtain FoG signals from PD patients. Accelerometers, gyroscopes, and ... ...

Abstract	Freezing of gait is a common gait disorder among patients with advanced Parkinson's disease and is associated with falls. This paper designed the relevant experimental procedures to obtain FoG signals from PD patients. Accelerometers, gyroscopes, and force sensing resistor sensors were placed on the lower body of patients. On this basis, the research on the optimal feature extraction method, sensor configuration, and feature quantity selection in the FoG detection process is carried out. Thirteen typical features consisting of time domain, frequency domain and statistical features were extracted from the sensor signals. Firstly, we used the analysis of variance (ANOVA) to select features through comparing the effectiveness of two feature selection methods. Secondly, we evaluated the detection effects with different combinations of sensors to get the best sensors configuration. Finally, we selected the optimal features to construct FoG recognition model based on random forest. After comprehensive consideration of factors such as detection performance, cost, and actual deployment requirements, the 35 features obtained from the left shank gyro and accelerometer, and 78.39% sensitivity, 91.66% specificity, 88.09% accuracy, 77.58% precision and 77.98% f-score were achieved. This objective FoG recognition method has high recognition accuracy, which will be helpful for early FoG symptoms screening and treatment.
MeSH term(s)	Gait ; Gait Disorders, Neurologic/complications ; Gait Disorders, Neurologic/etiology ; Humans ; Leg ; Parkinson Disease/complications ; Parkinson Disease/diagnosis ; Wearable Electronic Devices
Language	English
Publishing date	2022-06-21
Publishing country	England
Document type	Journal Article
ZDB-ID	2041347-6
ISSN	1471-2377 ; 1471-2377
ISSN (online)	1471-2377
ISSN	1471-2377
DOI	10.1186/s12883-022-02732-z
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Article ; Online: Exploring optimal joint operating rules for large-scale inter-basin water transfer projects with multiple water sources, diversion routes, and water demand areas

Zhong, Huayu / Tao, Liao / Fang, Guohua / Ren, Kang / Zhang, Shiwei

Journal of Hydrology: Regional Studies. 2023, p.101504-

2023 , Page(s) 101504–

Abstract: Study region: The Jiangsu Province section of the South-to-North Water Diversion Project (JS-SNWDP) is an essential section of the SNWDP, which includes multiple water sources, diversion routes, and water demand areas. Study focus: Exploring effective ... ...

Abstract	Study region: The Jiangsu Province section of the South-to-North Water Diversion Project (JS-SNWDP) is an essential section of the SNWDP, which includes multiple water sources, diversion routes, and water demand areas. Study focus: Exploring effective operating rules for the JS-SNWDP is critical to improving its long-term operational performance. However, deriving the operating rule for the JS-SNWDP remains a pressing challenge due to the complexity of its water allocation, which requires trade-offs between multiple water sources and diversion routes when supplying and transferring water. Here, we design a new form of the joint operating rules for the JS-SNWDP that includes water-supply rules and water-transfer rules, and establish a multi-objective optimization operation model by simulation-optimization approach to identify the optimal joint operating rules that contribute to the improvement of water supply reliability and the reduction of operation cost. New hydrological insights for the region: The proposed joint operating rule shows obvious advantages over the regular operating rule, with an increase in the water supply rate (2.0%) while the strongly reduced pumping water (24.7%). Meanwhile, compared with the regular operating rule, the joint operating rule enables a more rational use of the runoff regulation capacity of the lakes, which obviously reducing the pumping water from the Yangtze River and the surplus water in the two lakes obviously. The findings of this study are applicable to improve the operational performance of the JS-SNWDP, and provide a reference for exploring the joint operating rules for other IBWTPs with similar structures.
Keywords	models ; operating costs ; runoff ; water allocation ; water supply ; China ; Yangtze River ; Inter-basin water transfer ; Jiangsu Province section of the South-to-North Water Diversion Project ; Optimized operation ; Simulation-optimization approach ; Water resources allocation
Language	English
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version
ZDB-ID	2814784-4
ISSN	2214-5818
ISSN	2214-5818
DOI	10.1016/j.ejrh.2023.101504
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Factor contribution to soil carbon and nitrogen accumulation after vegetation restoration on the Loess Plateau, China

Chen, Yuxuan / Sha, Guoliang / Wei, Tianxing / Ren, Kang / Guo, Xin / You, Huan / Jiang, Shan

Ecological Engineering. 2023, p.107016-

2023 , Page(s) 107016–

Abstract: Unraveling the distributions and controls of soil carbon (C) and nitrogen (N) accumulation is conducive to providing guidance for sustainable ecosystem management. Although the factors that affect soil C and N accumulation have been widely investigated, ... ...

Abstract	Unraveling the distributions and controls of soil carbon (C) and nitrogen (N) accumulation is conducive to providing guidance for sustainable ecosystem management. Although the factors that affect soil C and N accumulation have been widely investigated, the relative importance of these factors and whether they confer direct or indirect effects remain unclear. Herein, we examined the distributions of soil organic carbon (SOC), soil inorganic carbon (SIC), and total nitrogen (TN) stocks across the 0-200 cm soil profiles in grasslands, forestlands, and shrublands on the Loess Plateau. Moreover, we determined the relative contributions of land use, topography, and soil properties (texture, water, phosphorus, and available nitrogen) to their variations. The results showed that with increasing soil depth, SOC and TN stocks decreased, while SIC stocks fluctuated. However, large amounts of SOC, SIC, and TN were stored in the deep soil layers (100-200 cm), with values of 3.06, 26.63, and 0.50 kg/m², respectively. In the 0-200 cm soil layers, the total SIC stock was 53.40 kg/m² and was 6.8 times higher than the total SOC stock. Among different plant communities, grasslands had the highest SIC stock (54.83 kg/m²), while Armeniaca sibirica and Robinia pseudoacacia had the highest SOC stock (10.06 kg/m²) and TN stock (1.49 kg/m²), respectively. Furthermore, approximately 85% of the variations in SOC, SIC, and TN stocks were jointly affected by land use, topography, and soil properties, in which soil properties acted as the most important driving factors, followed by topography and land use. In particular, topography affected SOC, SIC, and TN stocks mainly through its effects on soil texture and water. Overall, vegetation restoration scenarios incorporating grasslands and Robinia pseudoacacia are highly recommended and should be tailored according to specific topographic features.
Keywords	Prunus sibirica ; Robinia pseudoacacia ; ecological restoration ; ecosystem management ; forest land ; land use ; nitrogen ; phosphorus ; shrublands ; soil depth ; soil inorganic carbon ; soil organic carbon ; soil texture ; texture ; topography ; total nitrogen ; China ; Soil carbon ; Soil nitrogen ; Relative contribution ; Vegetation restoration ; Loess Plateau
Language	English
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version
ZDB-ID	1127407-4
ISSN	0925-8574
ISSN	0925-8574
DOI	10.1016/j.ecoleng.2023.107016
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Qualitative study on diabetic cutaneous wound healing with radiation crosslinked bilayer collagen scaffold in rat model.

Li, Hongwei / Chen, Xin / Ren, Kang / Wu, Lihao / Chen, Gong / Xu, Ling

Scientific reports

2023 Volume 13, Issue 1, Page(s) 6399

Abstract: Diabetes may leave patients more prone to skin problems, and minor skin conditions can more easily turn into serious damage to the extracellular matrix, which further impairs the skin's mechanical properties and delays wound healing. Therefore, the aim ... ...

Abstract	Diabetes may leave patients more prone to skin problems, and minor skin conditions can more easily turn into serious damage to the extracellular matrix, which further impairs the skin's mechanical properties and delays wound healing. Therefore, the aim of the work is to develop extracellular matrix substitution to remodel the mechanical properties of diabetic cutaneous wound and thus accelerate diabetic wound healing. A green fabrication approach was used to prepare radiation crosslinked bilayer collagen scaffold from collagen dispersion. The morphological, mechanical and swelling characteristics of radiation crosslinked bilayer collagen scaffold were assessed to be suitable for cutaneous wound remodeling. The feasibility of radiation crosslinked bilayer collagen scaffold was performed on full-skin defect of streptozotocin-induced diabetic rats. The tissue specimens were harvested after 7, 14, and 21 days. Histopathological analysis showed that radiation crosslinked bilayer collagen scaffold has beneficial effects on inducing skin regeneration and remodeling in diabetic rats. In addition, immunohistochemical staining further revealed that the radiation crosslinked bilayer collagen scaffold could not only significantly accelerate the diabetic wound healing, but also promote angiogenesis factor (CD31) production. Vascularization was observed as early as day 7. The work expands the therapeutic ideas for cutaneous wound healing in diabetes.
MeSH term(s)	Rats ; Animals ; Diabetes Mellitus, Experimental/pathology ; Collagen/chemistry ; Wound Healing ; Skin/pathology ; Tissue Scaffolds/chemistry
Chemical Substances	Collagen (9007-34-5)
Language	English
Publishing date	2023-04-19
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-023-33372-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Construction of a Stable Expression System Based on the Endogenous

Ren, Kang / Zhao, Yiqing / Chen, Guo-Qiang / Ao, Xiang / Wu, Qiong

ACS synthetic biology

2023 Volume 13, Issue 1, Page(s) 61–67

Abstract: Halomonas ... ...

Abstract	Halomonas bluephagenesis
MeSH term(s)	Halomonas/genetics ; Halomonas/metabolism ; Toxin-Antitoxin Systems ; Polyhydroxyalkanoates/metabolism ; Biotechnology/methods ; Anti-Bacterial Agents/metabolism
Chemical Substances	Polyhydroxyalkanoates ; Anti-Bacterial Agents
Language	English
Publishing date	2023-12-15
Publishing country	United States
Document type	Journal Article
ISSN	2161-5063
ISSN (online)	2161-5063
DOI	10.1021/acssynbio.3c00622
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Article ; Online: Risk Factors for Nodal Failure in Patients with FIGO IIIC Cervical Cancer Receiving Definitive Image-Guided Radiotherapy.

Liu, Xiaoliang / Hou, Xiaorong / Hu, Ke / Zhang, Fuquan / Wang, Weiping / Ren, Kang

Current oncology (Toronto, Ont.)

2023 Volume 30, Issue 12, Page(s) 10385–10395

Abstract: Background: Nodal failure is a major failure pattern for patients with FIGO IIIC cervical cancer, which is further associated with worse survival. This study was designed to investigate risk factors for nodal failure in FIGO IIIC cervical cancer ... ...

Abstract	Background: Nodal failure is a major failure pattern for patients with FIGO IIIC cervical cancer, which is further associated with worse survival. This study was designed to investigate risk factors for nodal failure in FIGO IIIC cervical cancer patients. Methods: The characteristics of positive lymph nodes (LNs) and relevant clinical factors of 162 FIGO IIIC cervical cancer patients were collected. The chi-square test and logistic regression model were used to identify risk factors for nodal failure. Results: In total, 368 positive LNs were identified, including 307 pelvic LNs and 61 para-aortic LNs. The nodal failure rates for all LNs, pelvic LNs, and para-aortic LNs were 9.2%, 7.8%, and 16.4%, respectively. After 20 fractions of RT, a nodal short diameter (D Conclusions: Para-aortic LNs were more likely to experience nodal failure than pelvic LNs. Nodal shrinkage during radiotherapy and cycles of chemotherapy were associated with nodal failure in patients with FIGO IIIC cervical cancer.
MeSH term(s)	Female ; Humans ; Radiotherapy, Image-Guided ; Neoplasm Staging ; Uterine Cervical Neoplasms/radiotherapy ; Uterine Cervical Neoplasms/pathology ; Lymph Nodes/pathology ; Pelvis
Language	English
Publishing date	2023-12-08
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	1236972-x
ISSN	1718-7729 ; 1198-0052
ISSN (online)	1718-7729
ISSN	1198-0052
DOI	10.3390/curroncol30120756
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Article ; Online: Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors.

Ren, Kang / Liu, Zheng / Wei, Tong / Fan, Zhuangjun

Nano-micro letters

2021 Volume 13, Issue 1, Page(s) 129

Abstract: Due to their rapid power delivery, fast charging, and long cycle life, supercapacitors have become an important energy storage technology recently. However, to meet the continuously increasing demands in the fields of portable electronics, transportation, ...

Abstract	Due to their rapid power delivery, fast charging, and long cycle life, supercapacitors have become an important energy storage technology recently. However, to meet the continuously increasing demands in the fields of portable electronics, transportation, and future robotic technologies, supercapacitors with higher energy densities without sacrificing high power densities and cycle stabilities are still challenged. Transition metal compounds (TMCs) possessing high theoretical capacitance are always used as electrode materials to improve the energy densities of supercapacitors. However, the power densities and cycle lives of such TMCs-based electrodes are still inferior due to their low intrinsic conductivity and large volume expansion during the charge/discharge process, which greatly impede their large-scale applications. Most recently, the ideal integrating of TMCs and conductive carbon skeletons is considered as an effective solution to solve the above challenges. Herein, we summarize the recent developments of TMCs/carbon hybrid electrodes which exhibit both high energy/power densities from the aspects of structural design strategies, including conductive carbon skeleton, interface engineering, and electronic structure. Furthermore, the remaining challenges and future perspectives are also highlighted so as to provide strategies for the high energy/power TMCs/carbon-based supercapacitors.
Language	English
Publishing date	2021-05-17
Publishing country	Germany
Document type	Journal Article ; Review
ZDB-ID	2642093-4
ISSN	2150-5551 ; 2150-5551
ISSN (online)	2150-5551
ISSN	2150-5551
DOI	10.1007/s40820-021-00642-2
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