scholarly journals Somatic Embryogenesis from Mature Embryos of Olea europaea L. cv. ‘Galega Vulgar’ and Long-Term Management of Calli Morphogenic Capacity

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 758 ◽  
Author(s):  
Rita Pires ◽  
Hélia Cardoso ◽  
Augusto Ribeiro ◽  
Augusto Peixe ◽  
António Cordeiro
Keyword(s):  
Somatic Embryogenesis ◽  
New Technologies ◽  
Success Rates ◽  
Media Management ◽  
Mature Embryos ◽  
General Importance ◽  
Short Period ◽  
Olive Cultivars ◽  
Plant Acclimatization ◽  
First Time

Several olive cultivars, characterized by high-quality olive oil show agronomical issues such as excessive vigor, high susceptibility to biotic and abiotic stresses, and low propagation ability. They are strong candidates for breeding based on new technologies to improve their performance in a short period of time. For this reason, the first step is developing efficient somatic embryogenesis (SE) protocols. Somatic embryogenesis in olive is highly genotype-dependent for both adult tissues and mature embryos as initial explants, requiring the development of specific protocols for each genotype. Trials using cotyledons and radicles as initial explants, isolated from ripe seeds from the Portuguese olive cv. ‘Galega vulgar’, gave more than 95% calli development. Radicles proved to be the most responsive tissue for SE induction, with an average of 2 embryos per callus after callus transfer to expression medium, and 14 embryos per callus after subculture on the olive cyclic embryogenesis medium (ECO). Embryogenic competence could be recovered after several subcultures on ECO medium that maintained cyclic embryogenesis for an indeterminate period of time. Embryo conversion and plant acclimatization were also attained with high success rates. Media management for cyclic embryogenesis maintenance is of general importance for SE protocols in any olive genotype. Somatic embryogenesis was thus attained for the first time in embryo-derived explants of cv. ‘Galega vulgar’.

Somatic Embryogenesis and In vitro Plant Regeneration in Vigna trilobata (L.) Verd. - A Potential Pasture Legume

1970 ◽  
Vol 19 (1) ◽  
pp. 89-99
Author(s):  
K. Choudhary ◽  
M. Singh ◽  
M. S. Rathore ◽  
N. S. Shekhawat
Keyword(s):  
Somatic Embryogenesis ◽  
Growth Regulators ◽  
Somatic Embryos ◽  
Basal Medium ◽  
Long Term Study ◽  
Continuous Application ◽  
First Time ◽  
Pasture Legume

This long term study demonstrates for the first time that it is possible to propagate embryogenic Vigna trilobata and to subsequently initiate the differentiation of embryos into complete plantlets. Initiation of callus was possible on 2,4-D. Somatic embryos differentiated on modified MS basal nutrient medium with 1.0 mg/l  of 2,4-D and 0.5 mg/l  of Kn. Sustained cell division resulted in globular and heart shape stages of somatic embryos. Transfer of embryos on to a fresh modified MS basal medium with 0.5 mg/l of Kn and 0.5 mg/l of GA3 helped them to attain maturation and germination. However, the propagation of cells, as well as the differentiation of embryos, were inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking these growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation of embryogenic cultures in Vigna species are discussed. Key words: Pasture  legume, Vigna trilobata, Globular, Heart shape, somatic embryogenesis D.O.I. 10.3329/ptcb.v19i1.4990 Plant Tissue Cult. & Biotech. 19(1): 89-99, 2009 (June)

Conference report: innovation, interaction … and a lot of data: first time reflections on Internet Librarian International, UK 2018

2019 ◽  
Vol 36 (2) ◽  
pp. 21-22
Author(s):  
Ray Harper
Keyword(s):  
Best Practice ◽  
New Technologies ◽  
Conference Report ◽  
Library Services ◽  
New Techniques ◽  
Content Type ◽  
Making A Difference ◽  
Analyse Data ◽  
Physical Spaces ◽  
First Time

Purpose The purpose of this paper is to summarise a number of presentations at Day 1 of the Internet Librarian International conference, London, UK (16 October 2018). This was the 20th conference in the series, and the three key themes included were the next-gen library and librarian; understanding users, usage and user experience; and inclusion and inspiration: libraries making a difference. Design/methodology/approach This paper reports from the viewpoint of a first-time attendee of the conference. This summarises the main issues raised by each presentation and draws out the key learning points for practical situations. Findings The conference covered a variety of practical ways in which libraries can use technology to support users and make decisions about services. These include developing interactive physical spaces which include augmented reality; introducing “chat-bots” to support users; using new techniques to analyse data; and piloting new ways to engage users (such as coding clubs). A key theme was how we use and harness data in a way that is ethical, effective and relevant to library services. Originality/value This conference focussed on practical examples of how library and information services across sectors and countries are innovating in a period of huge change. The conference gave delegates numerous useful ideas and examples of best practice and demonstrated the strength of the profession in adapting to new technologies and developments.

scholarly journals Innovating on Inhaled Bioequivalence: A Critical Analysis of the Current Limitations, Potential Solutions and Stakeholders of the Process

Pharmaceutics ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1051
Author(s):  
Jonattan Gallegos-Catalán ◽  
Zachary Warnken ◽  
Tania F. Bahamondez-Canas ◽  
Daniel Moraga-Espinoza
Keyword(s):  
New Technologies ◽  
Innovation Process ◽  
Cost Effective ◽  
Regulatory Agencies ◽  
Drug Products ◽  
Effective Strategies ◽  
Rate Analysis ◽  
Orally Inhaled Drug Products ◽  
Next Generation Impactor ◽  
First Time

Orally inhaled drug products (OIDPs) are an important group of medicines traditionally used to treat pulmonary diseases. Over the past decade, this trend has broadened, increasing their use in other conditions such as diabetes, expanding the interest in this administration route. Thus, the bioequivalence of OIDPs is more important than ever, aiming to increase access to affordable, safe and effective medicines, which translates into better public health policies. However, regulatory agencies leading the bioequivalence process are still deciding the best approach for ensuring a proposed inhalable product is bioequivalent. This lack of agreement translates into less cost-effective strategies to determine bioequivalence, discouraging innovation in this field. The Next-Generation Impactor (NGI) is an example of the slow pace at which the inhalation field evolves. The NGI was officially implemented in 2003, being the last equipment innovation for OIDP characterization. Even though it was a breakthrough in the field, it did not solve other deficiencies of the BE process such as dissolution rate analysis on physiologically relevant conditions, being the last attempt of transferring technology into the field. This review aims to reveal the steps required for innovation in the regulations defining the bioequivalence of OIDPs, elucidating the pitfalls of implementing new technologies in the current standards. To do so, we collected the opinion of experts from the literature to explain these trends, showing, for the first time, the stakeholders of the OIDP market. This review analyzes the stakeholders involved in the development, improvement and implementation of methodologies that can help assess bioequivalence between OIDPs. Additionally, it presents a list of methods potentially useful to overcome some of the current limitations of the bioequivalence standard methodologies. Finally, we review one of the most revolutionary approaches, the inhaled Biopharmaceutical Classification System (IBCs), which can help establish priorities and order in both the innovation process and in regulations for OIDPs.

Business model of garment enterprises: a scientometric review

2021 ◽  
Vol 91 (13-14) ◽  
pp. 1609-1626
Author(s):  
Yuran Jin ◽  
Xiangye Song ◽  
Jinhuan Tang ◽  
Xiaodong Dong ◽  
Huisheng Ji
Keyword(s):  
Conference Proceedings ◽  
Social Science ◽  
Business Model ◽  
Western Europe ◽  
Business Models ◽  
New Technologies ◽  
Citation Index ◽  
The United States ◽  
Fast Fashion ◽  
First Time

The research on the business model of garment enterprises (BMGE) has expanded rapidly in the last decade. However, there is still a lack of comprehensive reviews of it, let alone visual research. Based on scientometrics, in this paper 118 papers and their 4803 references from Science Citation Index Expanded, Social Sciences Citation Index, Conference Proceedings Citation Index—Science, and Conference Proceedings Citation Index—Social Science & Humanities for the period 2010–2020 about the BMGE were analyzed by visualizing the co-cited references, co-occurrence keywords, burst references, dual-map overlays, and more with CiteSpace, Google Maps, and VOSviewer. The research revealed the intellectual landscapes of the BMGE for the first time and mapped the landmark papers, hotspots and trends, national or regional distributions and their cooperation networks, highly cited authors, and prestigious journals and disciplines related to the BMGE. The results show that the biggest hotspot is the fast fashion business model; social responsibility, smart fashion, Internet of Things, and sharing fashion are the main emerging hotspots; and the research focuses has evolved from traditional business models to business models driven by new technologies, then to new issues such as circular economy models. The institutions are mainly distributed in China, the United States, and Western Europe, and there is cooperation between more than 11 countries. The most popular disciplines are economics and politics, while psychology, education, and social science are the essential basic disciplines. The Journal of Cleaner Production and Journal of Fashion Marketing and Management, among others, actively promoted the research.

Research on the Key Technologies for New Large Dual-Platen High-Precision Clamping System

2010 ◽  
Vol 97-101 ◽  
pp. 64-68
Author(s):  
Jian Chen ◽  
Jin Wang ◽  
Guo Dong Lu ◽  
Zheng Qi Ling
Keyword(s):  
High Precision ◽  
Large Scale ◽  
New Technologies ◽  
Impact Factors ◽  
Adaptive Correction ◽  
Hydraulic Servo ◽  
New Type ◽  
Clamping System ◽  
Plastic Parts ◽  
First Time

High- precision and large scale are the developing trend for injection molding machine clamping system .This paper compared the characteristics of three-platen toggle and dual-platen hydraulic clamping system. The key impact factors that effecting plastic parts` precision from clamping system were discussed systematically first time. Based on these analyses, a new clamping system has been proposed and manufactured to improve the plastics parts` precision, including three new technologies: new type dual-platen structure, parallelism adaptive correction technology and numerical controlled hydraulic servo system technology. It has been applied in practical machine successfully, and experiment result proves that it is effective enough to satisfying the high-precision molding of large plastics parts.

Upgrade of Plate Heat Exchanger at Optimal Cost Through Core Pack Plate Welding Modification

2021 ◽  
Author(s):  
Khaled M. Mazen Al Khoujah ◽  
Antonio - Medina ◽  
Juma Rashid Al Qaydi ◽  
Jawwad Kaleem ◽  
Fatima Hassan Al Mansoori ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
New Technologies ◽  
Plate Heat Exchanger ◽  
Innovative Design ◽  
Plate Heat ◽  
Optimal Cost ◽  
Operating Modes ◽  
Gas Processing ◽  
Maximum Benefit ◽  
First Time

Abstract An innovative design was implemented as a solution for the repetitive failure of a plate heat exchanger installed at Gas Processing Facilitates due to weld cracking, the new design was introduced for the first time in the facility, demonstrating the novelty of utilizing new technologies and enhanced designs in Heat Exchangers used for gas processing. The main challenges were in accommodating various operating modes and ensure the prevention of reoccurrence of the failures. The success was achieved through the collaboration between the operating company and Industry experts in heat transfer equipment to replace the existing design at the gas processing Facilitates with no change in piping layouts, hence, performing the replacement at optimal cost and maximum benefit.

scholarly journals Induction of Somatic Embryogenesis in Vulnerable Medicinal Plant Hedychium spicatum Buch-Ham ex Smith

2014 ◽  
Vol 23 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Dinesh Giri ◽  
Sushma Tamta
Keyword(s):  
Somatic Embryogenesis ◽  
Medicinal Plant ◽  
Somatic Embryos ◽  
Synthetic Seeds ◽  
Ex Situ ◽  
Secondary Embryogenesis ◽  
Zygotic Embryos ◽  
High Concentration ◽  
Cotyledon Explants ◽  
Short Period

This protocol has been developed for somatic embryogenesis in Hedychium spicatum. Simultaneously, a method has also been developed for the production of synthetic seeds by using somatic embryos. Direct somatic embryos were developed on cotyledon explants of zygotic embryos on MS supplemented with high concentration of NAA (20.0 µM). Induction of secondary embryogenesis was best in 2,4-D supplemented medium fortified with activated charcoal. Germination of somatic embryos was enhanced by using GA3. Besides this, round and semi-hard beads of somatic embryos (synthetic seeds) could be produced by using 2% Na-alginate and 100 mM calcium chloride and more than 30% germination of synthetic seeds was achieved in MS. Well acclimated plants produced via somatic embryogenesis and/or synthetic seeds were transferred to field where more than 60% survived. This simple study enabled us to obtain a number of plantlets throughout the year each cycle requiring a short period of time. Besides propagation, this study provided an ex situ method for conservation of this vulnerable Himalayan species.D. O. I.http://dx.doi.org/10.3329/ptcb.v23i2.17506Plant Tissue Cult. & Biotech. 23(2): 147-155, 2013  (December)

Commercialization potential of somatic embryogenesis in black spruce tree improvement

1994 ◽  
Vol 70 (5) ◽  
pp. 593-598 ◽  
Author(s):  
G. W. Adams ◽  
M. G. Doiron ◽  
Y. S. Park ◽  
J. M. Bonga ◽  
P. J. Charest
Keyword(s):  
Somatic Embryogenesis ◽  
Clonal Propagation ◽  
Black Spruce ◽  
Tree Improvement ◽  
Embryogenic Tissue ◽  
Improvement Program ◽  
Mature Embryos ◽  
Somatic Plants ◽  
Number Of Individuals ◽  
Potential Tool

The somatic embryogenesis process was evaluated as a potential tool for operational vegetative propagation using individuals from families currently used in the J.D. Irving, Ltd. black spruce tree improvement program. Most families were responsive although the number of individuals within families capable of producing embryogenic tissue (ET) varied greatly (1–70%). Seventy-four percent of the ET clones produced mature embryos and most of these germinated. Greenhouse survival was initially low (11%) but improved in subsequent experiments to 45% as growing regimes were refined. Demonstration plantings of the resulting somatic plants were established at two sites in New Brunswick. A total of 206 clones were cryopreserved. The potential for integrating somatic embryogenesis techniques into tree improvement and stock production programs is discussed. Key words: tree improvement, somatic embryogenesis, clonal propagation, black spruce, biotechnology

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