Suggested Topics within your search.
Suggested Topics within your search.
-
12521
-
12522
Visualization simulation experiments and porosity evolution mechanisms of deep to ultra-deep carbonate reservoirs
Published 2025-04-01“…This unit comprises four core modules: an ultra-high temperature, high pressure triaxial stress core holder module (temperature higher than 300 °C, pressure higher than 150 MPa), a multi-stage continuous flow module with temperature-pressure regulation, an ultra-high temperature-pressure sapphire window cell and an in-situ high-temperature-pressure fluid property measurement module and real-time ultra-high temperature-pressure permeability detection module. Using the new experimental device and the carbonate rock samples from the Sichuan Basin and Tarim Basin to simulate the dissolution-precipitation process of deep to ultra-deep carbonate reservoirs in an analogous geological setting, the geological insights were obtained in three aspects. …”
Get full text
Article -
12523
Evolution law of pore characteristics in microwave-assisted acidification induced fracturing shale based on low field nuclear magnetic resonance technology
Published 2024-12-01“…Comprehensive observation of the changes in the T1-T2 spectra led to the conclusion that the process of penetration enhancement is the process of “pore opening” and “pore expansion”. …”
Get full text
Article -
12524
Determination of Tungsten, Molybdenum and 5 Associated Elements in Tungsten-Molybdenum Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with Direct Sintering
Published 2023-10-01“…However, the matrix effect cause by the alkali melting method seriously affects the accuracy and detection limit of instrument testing; the acid dissolution method has low dissolution efficiency for tungsten, molybdenum and other insoluble elements, and requires a long time and a complex pretreatment process by using a variety of inorganic strong acids such as hydrofluoric acid and aqua regia, which can also cause damage to the analytical and testing instruments.OBJECTIVESTo develop a simple and efficient method for quantitative analysis of tungsten and molybdenum and its associated elements in tungsten-molybdenum ore.METHODSBased on alkaline melting and acid dissolution, a method was established by inductively coupled plasma-optical emission spectrometry (ICP-OES) with direct sintering and complex extraction of hydrochloric acid-phosphoric acid-citric acid. …”
Get full text
Article -
12525
Evaluation of sarcopenia diagnosis strategies in Chinese community-dwelling older adults based on the 2019 Asian Working Group guidelines: a cross-sectional study
Published 2025-05-01“…This study evaluates the screening-to-diagnosis process in community-based preventive services. Methods This cross-sectional study utilized a questionnaire survey to evaluate SARC-F and SARC-CalF. …”
Get full text
Article -
12526
Implementation of evidence-based clinical nutrition: Usability of the new digital platform clinicalnutrition.science
Published 2025-01-01“…There was no effect on the malnutrition detection rate, the selection of an appropriate nutritional product or the identification of the most appropriate guideline. …”
Get full text
Article -
12527
Generating Mechanism of Online Public Opinion Heat in Public Emergencies from the Perspective of Information Ecology: Fuzzy Set Qualitative Comparative Analysis Based on 50 Cases
Published 2025-01-01“…Single-factor necessity detection and configuration analysis were performed, and robustness was tested by adjusting calibration points and consistency thresholds. …”
Get full text
Article -
12528
Optimization of IMU-based bending strain solving algorithm and full-scale experimental validation
Published 2024-11-01“…Results This study revealed that as pipeline bending strain increased, the errors between IMU detections and true bending strains grew. The mean square error, error covariance and error standard deviation of the bending strain data derived from the optimized solving process decreased from 0.007 0, 0.004 9, 0.070 2 to 0.001 2, 0.001 6, 0.012 6 respectively, while the coefficient of determination, indicating correlation, rose from 0.443 to 0.981. …”
Get full text
Article -
12529
Challenges and Opportunities of the Human-Centered Design Approach: Case Study Development of an Assistive Device for the Navigation of Persons With Visual Impairment
Published 2025-08-01“…However, the process also revealed significant barriers: limited legal and procedural clarity for engaging users in design phases, difficulties navigating ethics committees, and a lack of practical guidance within the ISO standard itself. …”
Get full text
Article -
12530
Towards Fast Implementation of Complex RNS Components on FPGAs
Published 2022-09-01“…However, complex RNS operations such as residue to binary (reverse) conversion, sign detection, scaling, magnitude comparison and overflow detection have not been efficiently implemented on FPGAs until now. …”
Get full text
Article -
12531
A wearable obstacle avoidance device for visually impaired individuals with cross-modal learning
Published 2025-03-01“…This module not only adaptively compresses video data to reduce transmission delay to the smartphone, but also operates on a customized FPGA board featuring a multi float-point vector unit streaming processing architecture, thereby facilitating responsive and energy-efficient obstacle detection. …”
Get full text
Article -
12532
Development and validation of a HPLC method for the determination of amoxicillin trihydrate, colistin sulphate, nipasol and nipagin in an injectable suspension.
Published 2016-06-01“…The elution was a seven step gradient elution program in 42 minutes. The proposed HPLC method was statistically validated with respect to specificity, linearity, limits of detection and quantification, ranges, precision and accuracy. …”
Get full text
Article -
12533
Rare Earth Element Contents and Occurrence Forms in Weathering Crust Ion Adsorption Rare Earth Ore
Published 2024-12-01“…ICP-MS was used as the detection method to explore the distribution of the total amount and various REE forms in the samples. …”
Get full text
Article -
12534
Clinical genome sequencing in patients with hereditary breast and ovarian cancer: Concept, implementation and benefits
Published 2025-08-01“…GS offers a wealth of information, including the improved detection of structural variants, copy number variants, and parallel detection of complex genetic markers. …”
Get full text
Article -
12535
MCM-41 based dispersive micro-solid phase extraction of selected cephalosporin antibiotic residues from water samples prior to liquid chromatographic quantification
Published 2024-12-01“…The kinetic and isotherm studies revealed that the adsorption process followed pseudo-second order and the Langmuir model, respectively. …”
Get full text
Article -
12536
A comprehensive review on the formation and mitigation of polycyclic aromatic hydrocarbons (PAH4) in edible oils: From oilseeds to oils
Published 2025-01-01“…In contrast, methods such as fluorescence spectroscopy, electrochemical sensors, and Surface-Enhanced Raman Scattering (SERS)-based optical sensors are more appropriate for on-site rapid detection. To reduce PAH4 concentrations, it is advisable to select raw materials with minimal contamination, utilize cold pressing or refining techniques during processing, and choose oils that are low in polyunsaturated fatty acids. …”
Get full text
Article -
12537
Current status and prospects of mining technology in metal mines
Published 2025-05-01“…This gap is particularly noticeable in ultra-deep mining, where practical experience is especially lacking. (2) Future mining technologies that require urgent attention can be categorized into four types based on their criticality and urgency: bottleneck technologies, foundational technologies, urgent technologies, and forward-looking technologies. (3) The current “bottleneck” technical challenges facing China’s mining sector include the development of intelligent and unmanned technologies for open-pit mining, advanced deep mining technologies for underground operations, and the research and application of specialized mining software. (4) The urgent technologies identified in this study include precise detection and safety management technologies for goaf areas, ultra-large-scale filling mining technologies for metallic mines, and intelligent ore grade detection technologies. (5) Foundational technologies encompass rock mechanics modeling for deep mining, multi-scale fracture simulation processes under geothermal system rock–hydraulic coupling, and dynamic control theories for managing disasters associated with deep mining activities. (6) Forward-looking technologies include a range of innovations, such as new transportation technologies for deep open-pit mines, advanced deep-well lifting techniques, novel efficient rock-breaking technologies, integrated mining and beneficiation technologies, co-extraction methods for both mineral and geothermal resources, and fluidized mining techniques for metallic minerals. …”
Get full text
Article -
12538
ANALYTICAL VALIDATION OF A 10-COLOR FLOW CYTOMETRY PANEL FOR ASSESSMENT OF MEASURABLE RESIDUAL DISEASE OF ACUTE MYELOID LEUKEMIA
Published 2024-10-01“…Conclusion: The results showed a successful process of laboratory validation for AML MRD assessment, as recommended by the international consensuses (ICCS and ELN) and to authorize its use for clinical decision making.…”
Get full text
Article -
12539
Development of a novel pseudovirus-based quality control material for HIV-1 nucleic acid testing and its application in external quality assessment
Published 2025-07-01“…MS2-armed RNA (MS2) does not replicate the biological characteristics of natural viruses or the complexities of the extraction and detection processes associated with authentic viral particles. …”
Get full text
Article -
12540
Real-time monitoring of ssDNA binding using a fiber optic LSPR microfluidic platform
Published 2025-08-01“…The sensor exhibits a limit of detection (LOD) of 0.75 nM. The proposed method shows potential for high-sensitivity and reliable real-time detection of smaller biomolecules, environmental pollutants, foodborne pathogens, toxins, and disease biomarkers.…”
Get full text
Article