Essays about: "Column test"

Showing result 1 - 5 of 65 essays containing the words Column test.

  1. 1. Screening of HETP test conditions and resin storage solutions for HIC

    University essay from Uppsala universitet/Analytisk farmaceutisk kemi

    Author : Lise-Lotte Ronnerfors; [2023]
    Keywords : Hydrophobic Interaction Chromatography; Pfizer Health AB; Column packing;

    Abstract : Hydrophobic interaction chromatography (HIC) is a common purification method for biological drug substances. For continuous monitoring the quality of the purification, a column performance test is carried out to test the packing of the resin. READ MORE

  3. 2. Optimization of two high-performance size-exclusion chromatography methods with diode-array detection for protein quantification and purity assessment

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Camilla Lane; [2023]
    Keywords : Method qualification; Protein concentration; Protein Purity; High Performance Size exclusion chromatography; Quality control; Analytical chemistry; Biology and Life Sciences;

    Abstract : Background: There is a need to develop methods of determining concentration and purity for two new affinity ligands, protein T and protein H, in order to ensure the quality of an industrial production of said proteins. Aims: To develop a High Performance Size Exclusion Chromatography, HPSEC, method to determine concentration and purity of protein T and to improve an existing HPSEC method for concentration and purity determination of protein H that show selectivity, display linearity between peak area and injection amount and give repeatable results. READ MORE

  4. 3. Compression Selection for Columnar Data using Machine-Learning and Feature Engineering

    University essay from Malmö universitet/Institutionen för datavetenskap och medieteknik (DVMT)

    Author : Douglas Persson; Ludvig Juelsson Larsen; [2023]
    Keywords : Machine Learning; XGBoost; Classification; Feature Engineering; Compression Algorithms; Data Encodings; Database Management System DBMS ; Column- Oriented DBMS;

    Abstract : There is a continuously growing demand for improved solutions that provide both efficient storage and efficient retrieval of big data for analytical purposes. This thesis researches the use of machine-learning together with feature engineering to recommend the most cost-effective compression algorithm and encoding combination for columns in a columnar database management system (DBMS). READ MORE

  5. 4. Methods for Comparing Database Management Systems

    University essay from Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska fakulteten

    Author : Jakob Törnqvist; [2023]
    Keywords : DBMS; mongodb; postgresql; apache cassandra; memcached; neo4j; ease of implementation; performance tests; graph DBMS; document DBMS; wide-column DBMS; relational DBMS; cache; database; database management system;

    Abstract : Zenon AB is an it-company of which, this thesis was made in collaboration with. Zenon AB has clients that generate large amounts of data, therefore it is important for Zenon AB that they make competent choices of database management systems (DBMS) when designing systems for their clients. READ MORE

  6. 5. Processing of ERT data from Stabilised Columns

    University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Author : Mårten Petersson; [2023]
    Keywords : inversion; ERT; quality control; jet grouting; aarhusinv; Technology and Engineering;

    Abstract : Modern construction sites are associated with high demands on suitable soil conditions, resulting in geotechnical challenges that can be solved using soil stabilisation techniques. The reliability of these techniques is tested using different quality assurance methods. READ MORE