Culture conditions

The tassel fern, Huperzia squarrosa, is a rare and medicinally valuable plant known for containing Huperzine A. It propagates naturally through spores, rhizomes, cuttings, and clump division, but with a slow multiplication rate. This study aimed to optimize propagation conditions for H. squarrosa using stem cuttings and in vitro culture techniques to support its preservation and development.

11p tuetuebinhan000 23-01-2025 3 2   Download

This research develops a rich theoretical and empirical understanding of embeddedness by way of three dimensions (structural, relational and cultural), and investigates its implications for actors’ value co-creation behaviours and value-in-context outcomes. In addition, the research refines co-creation perspectives by examining a central boundary condition of co-creation processes. The data was collected in an online service environment and was analysed using structural equation modelling techniques.

183p runthenight04 02-02-2023 18 2   Download

Objectives of the study: Survey of biological activity of alkaloid isolated from hairy roots of E.longifolia to find new activities. Determining optimal culture conditions for E.longifolia hairy roots to grow and develop. Determining the concentration of three elicitors (Salicylic acid, Jasmonic acid and Yeat extract) on the production and accumulation of alkaloids isolated from hairy roots of E.longifolia in vitro.

26p extraenglish 24-05-2021 33 5   Download

Optimazize the in vitro Ngoc Linh ginseng lateral root culture and multiplicate the root biomass is more stable and higher in bioreactor system. Determine and evalute the effect of different types, and concentrations of five elicitors (SA, JA, ABA, CHN và YE) on producing saponin compounds. Next, combine in various types of elicitors to enhance effectiveness of the saponin accumulation, and determine the best elicitation time to develop the highest saponin in LRs of Ngoc Linh từ ARs in vitro.

27p nguathienthan12 23-05-2021 19 4   Download

The objective of the study was to find the explant resources, the type and concentration of plant growth regulators (PGRs), as well as the in vitro culture conditions suitable for different morphogenesis processes - callus induction, direct embryogenesis, shoot and root formation, etc. The growth and development of in vitro Ngoc Linh ginseng derived from thin cell layer (TCL) was examined in Quang Nam to assess the adaptability of in vitro Ngoc Linh plantlets in its natural territory, compared to those growing in Bidoup - Nui Ba National Park, Lam Dong.

27p capheviahe27 23-02-2021 25 5   Download

To provide scientific data on biological characteristics, breeding techniques, nursing and grow-out of Helmet Catfish - Cranoglanis bouderius (Richardson, 1846) in culture condition of Nghe An province. The success of the thesis will greatly contribute the basic knowledge to develop the seed production technique that can help to support the seed resources for commercial culture models and gene resources conservation for this species.

28p capheviahe27 23-02-2021 18 4   Download

The thesis proposes solutions to SALM in Bac Giang City in the direction of spatial, architectural and landscape construction and development toward a green city, then contributing to improving the quality of people’s living; preserving and promoting cultural values, natural conditions, socio-economic development, and climate change resilience.

27p trinhthamhodang7 31-08-2020 18 2   Download

The general objective of this thesis is to develop a framework for transition of financial statements from Vietnamese Accounting Standard (VAS) to Intrenational Financial Reporting Standard (IFRS) for Vietnamese companies. It is necessary to identify and measure factors that affect in transition of IFRS financial statements in the conditions of economic, political, cultural and social of Vietnam.

32p quenchua 28-09-2019 39 4   Download

The objective of the study was to find the explant resources, the type and concentration of plant growth regulators (PGRs), as well as the in vitro culture conditions suitable for different morphogenesis processes - callus induction, direct embryogenesis, shoot and root formation, etc. The growth and development of in vitro Ngoc Linh ginseng derived from thin cell layer (TCL) was examined in Quang Nam to assess the adaptability of in vitro Ngoc Linh plantlets in its natural territory, compared to those growing in Bidoup - Nui Ba National Park, Lam Dong.

27p xacxuoc4321 09-07-2019 38 5   Download

PhotobacteriumphosphoreumIFO13896 emits light strongly when cultured in medium containing 3% NaCl, but only weakly in medium containing 1% NaCl.It is known that dim or dark mutants appear frequently and spontaneously from this parent strain.To confirm that riboflavin biosyn-thesis is stimulatedwhen theluxoperon is active, the amount of light emitted and flavins synthesized under strongly or weakly light emitting conditions was determined.

10p tumor12 22-04-2013 29 5   Download

We have isolated and characterized a second [Fe]-hydro-genasegene fromthegreenalga,Chlamydomonas reinhardtii. TheHydA2gene encodes a protein of 505 amino acids that is 74% similar and 68% identical to the known HydA1 hydrogenase fromC. reinhardtii.HydA2 contains all the conserved residues and motifs found in the catalytic core of the family of [Fe]-hydrogenases. We demonstrate that both theHydA1and theHydA2transcripts are expressed upon anaerobic induction, achieved either by neutral gas purging or by sulfur deprivation of the cultures. ...

9p fptmusic 16-04-2013 52 2   Download

Human colon adenocarcinoma cells (HT29-ATCC) and the clone HT29-5F7 were cultured under conditions that differentiate cells to a polarized intestinal phenotype. Differentiated cells showed the presence of junctional complexes and intercellular lumina bordered by microvilli. Intestinal brush border hydrolase activities (sucrase, aminopeptidase N, lactase and mal-tase) were detected mainly in differentiated HT29-ATCC cells compared with the differentiated clone, HT29-5F7.

10p inspiron33 25-03-2013 38 3   Download

In this research, the growth and metabolic activities of Saccharomyces cerevisiae immobilized in alginate gel during alcoholic fermentation with different initial glucose concentration were studied. Starting from initial glucose concentration at 140 g/L, we observed that increasing this concentration to 220 g/L had little effect on the growth of immobilized yeast. Under the same conditions, the maximum biomass, glucose uptake rate, and final ethanol concentration obtained in the immobilized yeast cultures were always higher than those in the free yeast cultures....

7p nhatro75 22-07-2012 81 11   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Sphingosine-1-phosphate promotes the differentiation of human umbilical cord mesenchymal stem cells into cardiomyocytes under the designated culturing conditions

9p toshiba23 18-11-2011 63 3   Download

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Variation in the molecular weight of Photobacterium damselae subsp. piscicida antigens when cultured under different conditions in vitro

7p hoami_238 19-09-2011 53 3   Download

Tạp chí KHKT Nông nghiệp, Tập 1, số 3/2003 ?Decalactone của chủng nấm men Yarrowia lipolytica W29 Several facrors affecting biosynthesis of gama- decalactone by yeast strain Yarrowia lipolytica W29 Lại Thị Ngọc Hà1 summary A study was undertaken to determine factors affecting biosynthesis of gama-decalactone by yeast strain Yarrowia lipolytica W29. It was shown that Yarrowia lipolytica W29 best produced gama-decalactone under the following conditions: concentration of ricin oil 2g/200ml, culture pH of 7, and agitation speed of 200 rounds/minut.

6p thulanh2 07-09-2011 77 8   Download

Tea tree is historically the oldest cultivated. Swiss botanist Candolle (1788-1881) classified into types A tea that is already planted over 4000 years . Green tea originates from China and has become associated with many cultures in Asia from Japan and South Korea to the Middle East. Recently, it has become more widespread in the West. Botanical evidence indicates that India and China were among the first countries to cultivate tea.

10p phamthidiemphuc 03-11-2010 154 29   Download