Extraction operator

This paper focuses on optimizing the chromatographic instrumental operating parameters and the solid phase extraction conditions using HLB cartridges. Results from the method validation showed that the method has sub ng/L LOQs (0.10-0.60 ng/L), quantitative recoveries at the concentrations near the LOQs (74.4-122.8%) and high repeatability with acceptable %RSD (15.6-38.3%).

6p dianmotminh02 03-05-2024 2 1   Download

Ebook "Ionic liquids for better separation processes" discusses capital separation processes of industrial interest and explores the potential for substantial improvement offered by a promising class of substances: ionic liquids. These low melting point salts, with their unique characteristics, have been gaining relevance in the field of separation through a variety of approaches.

235p tracanhphuonghoa1007 22-04-2024 5 3   Download

Part 2 book "Perry’s chemical engineers’ handbook" includes content: Transport and storage of fluids, heat transfer equipment, psychrometry, evaporative cooling, and solids drying, distillation, gas absorption and gas liquid system design, liquid liquid extraction operations and equipment, adsorption and ion exchange,.... and other contents.

874p muasambanhan09 12-03-2024 4 0   Download

Part 2 book "Fluid mechanics, heat transfer and mass transfer - Chemical engineering practice" includes content: Shell and tube heat exchangers; heat transfer equipment involving phase transfer; refrigeration, heat pumps, heat tracing, coiled and jacketed vessels, steam traps, and immersion heaters; compact heat exchangers, regenerators, and recuperators; radiant heat transfer and fired heaters; mass transfer basics; mass transfer equipment; absorption, distillation, and extraction; crystallization, air–water operations, drying, adsorption, membrane separations, and other mass transfer proc...

402p muasambanhan09 12-03-2024 5 0   Download

The aim of this study was to establish and validate a clinical prediction model for assessing the risk of metastasis and patient survival in Ewing’s sarcoma (ES). Patients diagnosed with ES from the Surveillance, Epidemiology and End Results (SEER) database for the period 2010-2016 were extracted, and the data after exclusion of vacant terms was used as the training set (n=767).

12p vialfrednobel 23-12-2023 6 3   Download

Ebook "Feature extraction in computer vision and image processing" includes content: Introductionl images, sampling and frequency domain processing; basic image processing operations, low- level feature extraction (including edge detection); feature extraction by shape matching,... and other contents.

360p haojiubujain07 20-09-2023 9 4   Download

Giáo trình Anh văn chuyên ngành 2 (Ngành: Khai thác máy tàu biển) gồm những nội dung sau: Unit 1 - What a diesel engine; Unit 2 - Diesel engine the principle of operation; Unit 3 - Diesel engine the principle of operation (2-stroke engines); Unit 4 - Pistons; Unit 5 - Cylinders; Unit 6 - Crankshafts; Unit 7 - Survey report (1); Unit 8 – Survey report (2); Unit 9 - Valve gear; Unit 10 - Cooling; Unit 11 - Kinds of fuel pumps; Unit 12 - Oil pumps; Unit 13 - Extract from engine log book; Unit 14 - Refuelling of fuel oil;...

104p cotieutieu 07-10-2023 11 6   Download

This paper proposes a framework for deploying a voice search engine that uses Whisper, a deep learning-based automatic speech recognition model, and combines TF-IDF, N-gram, and Truncated SVD as feature extraction approaches to search for text ground truth in a dictionary of military symbols using Cosine similarity.

10p viwarmachine 01-07-2023 9 4   Download

Ebook Intelligence integration in distributed knowledge management: Part 1 presents the following content: Chapter I: Logical inference based on incomplete and/or fuzzy ontologies; Chapter II: Using logic programming and XML technologies for data extraction from web pages; Chapter III: A formal analysis of virtual enterprise creation and operation; Chapter IV: Application of uncertain variables to knowledge-based resource distribution; Chapter V: A methodology of design for virtual environments; Chapter VI: An ontological representation of competencies as codified knowledge.

138p runthenight08 12-04-2023 6 1   Download

This paper describes our new proposed method for automatically identifying the text of vehicle number plate. From a new image, the method automatically extracts plate, classifies and recognizes characters (digits).

5p vijaguar 16-11-2022 10 1   Download

Web technologies and e-services: Lecture 8. This lesson provides students with content about: explain the nature of a servlet and its operation; use the appropriate servlet methods in a web application; code the extraction of environment entries within a servlet; handle HTML forms within a servlet;... Please take a close look at the course content!

49p tieuduongchi 24-10-2022 7 4   Download

The purpose of this book was to provide a mixture of theory and practice for a such course in system administration; to extract those principles and ideas of system administration which do not change on a day-to-day basis; and to present them in a defensible manner.

649p namkimcham10 04-07-2022 13 5   Download

Lecture Object-Oriented programming - Lesson 19: Stream insertion operator. The main topics covered in this chapter include: compiler error: binary, operand of type ‘class Complex’, class complex, void operator, friend ostream, stream extraction operator,...

20p linyanjun_2408 23-04-2022 12 1   Download

Lecture Introduction to Programming: Lesson 37 provide students with knowledge about operator overloading; stream insertion/extraction; friend function; member operators; stream insertion operator; istream & operator;...

23p hanthienngao 15-04-2022 8 1   Download

Lecture Introduction to Programming: Lesson 44 provide students with knowledge about class matrix; stream insertion and extraction operator; matrix operator; friend matrix operator; multiplication operator; division operator; friend istream & operator;...

36p hanthienngao 15-04-2022 11 1   Download

Lecture Introduction to Programming: Lesson 45 provide students with knowledge about assignment operator; class matrix; self assignment; addition operator; insertion operator; extraction operator; template for matrix class; repetition structure; classes and objects;...

38p hanthienngao 15-04-2022 11 1   Download

Phytoremediation is a method of using plants to extract, isolate or detoxify pollutants through chemical, physical and biological processes. For years, this method has been considered as an effective method for wastewater treatment thanks to its high efficiency, low cost, stability, and simplicity of operation. Besides, this wastewater treatment technology is environmentally friendly since it increases biodiversity and contributesto the landscape of the environment and local ecosystems.

12p vinikolatesla 31-03-2022 15 2   Download

. In this work, we elaborate on the fusion of early vision primitives using generalizations of the Choquet integral, and novel aggregation operators that have been extensively studied in recent years.

15p guernsey 28-12-2021 10 0   Download

Calendula officinalis L. is a commercially important plant that finds application in the treatment of various diseases in traditional medicine. The total antioxidant capacity, radical scavenging activity, and total phenolic content of marigold extracts were investigated by Folin, CUPRAC, and DPPH assays, respectively. The optimum operating conditions of microwave-assisted extraction (MAE) including temperature, extraction time, solvent-to-solid ratio, and solvent concentration were ascertained by employing response surface methodology (RSM).

15p tudichquannguyet 29-11-2021 14 1   Download

Jute cultivation is a labour-intensive activity. Small and marginal farmers extensively practice high density sowing (HDS) by broadcasting jute seed. High plant stand due to HDS at emergence increases major operational expenses of weeding and thinning, sorting and fibre extraction. To investigate effects of low density sowing (LDS)on production potential of fibre and green biomass and possible reduction in man-days and cost of cultivation, field experiment was conducted at ICAR-CRIJAF farm and it was also repeated through farmers’ field trials in four different locations

9p trinhthamhodang1216 19-11-2020 15 2   Download