Results 71 to 80 of about 1,635,403 (365)

Isolation of anti-mycobacterial compounds from Curtisia dentata (Burm.f.) C.A.Sm (Curtisiaceae)

BMC Complementary and Alternative Medicine, 2017
Background Tuberculosis is counted amongst the most infectious and lethal illnesses worldwide and remains one of the major threats to human health. The aim of the current study was to isolate and characterize anti-mycobacterial compounds present in ...
Victor O. Fadipe, Nkoana I. Mongalo, Andy R. Opoku, Preachers M. Dikhoba, Tshepiso J. Makhafola   +4 more
doaj   +1 more source

S3RL: Enhancing Spatial Single‐Cell Transcriptomics With Separable Representation Learning

Advanced Science, EarlyView.
Separable Spatial Representation Learning (S3RL) is introduced to enhance the reconstruction of spatial transcriptomic landscapes by disentangling spatial structure and gene expression semantics. By integrating multimodal inputs with graph‐based representation learning and hyperspherical prototype modeling, S3RL enables high‐fidelity spatial domain ...
Laiyi Fu, Penglei Wang, Gaoyuan Xu, Jitao Lu, Qinke Peng, Danyang Wu, Hequan Sun   +6 more
wiley   +1 more source

Regularizing Portfolio Optimization [PDF]

, 2009
The optimization of large portfolios displays an inherent instability to estimation error. This poses a fundamental problem, because solutions that are not stable under sample fluctuations may look optimal for a given sample, but are, in effect, very far
Acerbi C, Acerbi C Nordio C Sirtori C, Bengio Y, Bertsekas D P, Bordes A, Bottou L, Bouchaud J-Ph, Burda Z, Chopra V K, DeMiguel V, Elton E J, Embrechts P, Frahm G, Frahm G Memmel Ch, Gulyas N Kondor I, Imre Kondor, Jobson J D, Jorion P, Kempf A, Kondor I Varga-Haszonits I, Macrae R, Markowitz H, Morgan J P Reuters Riskmetrics, Perez-Cruz F, Potters M, Rockafellar R T, Schölkopf B, Schölkopf B, Susanne Still, Tibshirani R, Vanderbei R J, Vapnik V, Vapnik V, Vapnik V, Varga-Haszonits I   +34 more
core   +2 more sources

Protection and Delivery of Phytochemicals from Passive Encapsulation to Guaranteed Self‐Assembly Induced by Amyloid Template for Chronic Disease Prevention via Modulating Microbial‐Host Crosstalk

Advanced Science, EarlyView.
ABSTRACT The rising incidence of chronic diseases globally has drawn widespread attention to phytochemicals, which exert targeted preventive and alleviating effect by modulating gut microbiota; thus, a potential strategy for precision nutritional interventions is offered.
Shiqi Bai, Siying Cheng, Fengguang Ma, Xiaorong Zhang, Jianan Huang, Zhonghua Liu, Bing Hu   +6 more
wiley   +1 more source

Mitophagy and Ubiquitination Coordinate Context‐Specific Mitochondrial Quality Control and EMT/MET Plasticity to Drive Cancer Cell Invasion

Advanced Science, EarlyView.
Metastatic invasion emerges when tumor‐intrinsic programs and microenvironmental forces converge on mitochondrial quality control. A context‐stratified framework links mtROS, mtDNA integrity, mechanics and nutrient/oxygen cues to fission–fusion remodeling, mtUPR and mitophagy.
Bin‐Hsu Mao, Bo‐Kai Su, Ying‐Jan Wang, Ting‐Yuan Tu   +3 more
wiley   +1 more source

The Application of Imperialist Competitive Algorithm for Fuzzy Random Portfolio Selection Problem

, 2013
This paper presents an implementation of the Imperialist Competitive Algorithm (ICA) for solving the fuzzy random portfolio selection problem where the asset returns are represented by fuzzy random variables.
Mohasefi, Jamshid Bagherzadeh, Sadati, Mir Ehsan Hesam   +1 more
core   +1 more source

Combining Electrochemical Reduction with Biosynthesis for Directed Conversion of CO2 into a Library of C3 Chemicals

Advanced Science, EarlyView.
In the H‐type electrolytic cell, carbon dioxide is reduced to acetic acid via electro‐microbial catalysis. The simply processed acetic acid is further converted through biological fermentation into high‐value‐added products, including acrylic acid, L‐lactic acid, and β‐alanine.
Kaixing Xiao, Shanquan Liang, Xujun Zhao, Zhiyao Peng, Ruoshi Luo, Jikai Zong, Ling Zhou, Yude Su, Dan Wang   +8 more
wiley   +1 more source

Intrinsic Mechanical Parameters and their Characterization in Solid‐State Lithium Batteries

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
This review focuses on the intrinsic mechanical parameters and their associated characterization in solid‐state batteries. The physical significance of mechanics parameters is introduced with exhaustive classifications by elastic, plastic deformations and fracture in bulk, adhesion, friction at interfaces, and mechanical fatigue in cells ...
Shuai Hao, Qianyi Zhang, Xiangkang Kong, Zhaoxiang Wang, Xue‐Ping Gao, Paul R. Shearing   +5 more
wiley   +1 more source

Polymer Coating Enabled Carrier Modulation for Single-Walled Carbon Nanotube Network Inverters and Antiambipolar Transistors

Nanomaterials
The control of the performance of single-walled carbon nanotube (SWCNT) random network-based transistors is of critical importance for their applications in electronic devices, such as complementary metal oxide semiconducting (CMOS)-based logics.
Zhao Li, Jenner H. L. Ngai, Jianfu Ding
doaj   +1 more source

Analysis of optimum informational support for sales channels during product launches

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2008
The aim of this article is to analyse efficiency of sales channels in the time when new products are being launched. As the most suitable method for this analysis was chosen the method of mystery shopping because it can properly compare and measure the ...
Michal Vodák
doaj   +1 more source