scholarly journals Enhancing Multiple Jets in Electrospinning: The Role of Auxiliary Electrode

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 768 ◽  
Author(s):  
Yu-Ke Wu ◽  
Zong-Jie Li ◽  
Jie Fan ◽  
Zhao-Peng Xia ◽  
Yong Liu
Keyword(s):  
Applied Voltage ◽  
Electric Field Intensity ◽  
Deep Understanding ◽  
Vertical Position ◽  
Auxiliary Electrode ◽  
Injection Speed ◽  
Nanofiber Diameter ◽  
Multiple Jets ◽  
Simulation Results

An auxiliary electrode introduced in traditional spinneret electrospinning is an effective and powerful technique to improve the production rate of nanofibers. In this work, the effects of the arrangement of auxiliary electrode, applied voltage, injection speed, and the distance between the electrode tip and the spinneret tip (ESD) on the jet number and the morphology of polyvinyl alcohol (PVA) nanofibers were investigated systematically. The results showed that the number of jets firstly increased and then decreased with the increase of applied voltage and ESD, respectively, while increasing with the injection speed in both the auxiliary electrode in the vertical position and parallel position. The average nanofiber diameter decreased with increasing of applied voltage and injection speed, but decreasing in ESD in these two positions. The numerical simulation results revealed that the auxiliary electrode primarily influenced the electric field intensity in the spinning area. This work provides a deep understanding of multiple jets in electrospinning.

scholarly journals Multiple-Jet Needleless Electrospinning Approach via a Linear Flume Spinneret

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2052 ◽  
Author(s):  
Liang Wei ◽  
Chengkun Liu ◽  
Xue Mao ◽  
Jie Dong ◽  
Wei Fan ◽  
...  
Keyword(s):  
Process Parameters ◽  
Applied Voltage ◽  
Mass Production ◽  
Solution Concentration ◽  
Average Error ◽  
High Quality ◽  
Needleless Electrospinning ◽  
Nanofiber Diameter ◽  
Multiple Jets ◽  
Spinning Process

There is a great limitation to improving the quality and productivity of nanofibers through the conventional single-needle method. Using needleless electrospinning technology to generate multiple jets and enhance the productivity of nanofibers has attracted lots of interest for many years. This study develops a novel linear flume spinneret to fabricate nanofibers. Multiple jets with two rows can be formed simultaneously on the surface of the spinneret. The solution concentration has a significant impact on the average nanofiber diameter compared with applied voltage and collection distance. The effects of different spinning process parameters on the productivity of nanofibers are investigated. High-quality nanofibers with small nanofiber diameter and error can be fabricated successfully. The average nanofiber diameter is 108 ± 26 nm. The average error is 24%. The productivity of nanofibers can reach 4.85 ± 0.36 g/h, which is about 24 times more than that of the single-needle method. This novel linear flume spinneret needleless electrospinning technology exhibits huge potential for mass production of nanofibers in the field of industrialization.

Ч. АЙТМАТОВДУН ЧЫГАРМАЛАРЫНДАГЫ ЖАЛПЫ АДАМЗАТТЫК БААЛУУЛУКТАРДЫН МААНИСИ ЖАНА ЖАШ МУУНДАРДЫ ТАРБИЯЛООДОГУ ОРДУ

2020 ◽  
pp. 164-167
Author(s):  
Айнура Байтокова
Keyword(s):  
Deep Understanding ◽  
Cultural Development ◽  
Point Of View ◽  
Human Values ◽  
Spiritual Values ◽  
Future Teachers ◽  
Youth Education ◽  
Spiritual World ◽  
Universal Values

Аннотация. Макала учурдагы актуалдуу проблемалардын бири болгон жаш муундарда жалпы адамзаттык баалуулуктарды тарбиялоо. Макалада Ч. Айтматовдун чыгармаларындагы баалуулуктардын мааниси жана алардын жаш муундарды тарбиялоодогу орду жөнүндө маселени козгойт. Өзгөчө жаңы социалдык экономикалык өзгөрүүлөр менен жаш муундардын адеп-ахлактык, руханий дүйнөсү өзгөрүүдө. Бул жагдайдан алып караганда коомдун социалдык-маданий жактан андан ары өнүгүүсү үчүн башкы бириктирүүчү факторлордон болуп жаш муундардагы жалпы адамзаттык баалуулуктарды калыптандыруу маселеси биринчи орунга чыгат. Болочок мугалимдердин кесиптик билим алуусунда жалпы адамзаттык баалуулуктарды терең түшүнүүсү, алардын келечектеги кесиптик даярдыгына жардам берет. Демек, аларга жалпы адамзаттык баалуулуктарды сиңирүү абдан маанилүү учур талабы экендигин көрөбүз. Түйүндүү сөздөр: жалпы адамзаттык баалуулуктар, адамгерчилик, адеп-ахлак, руханий баалуулуктар, учурдагы көйгөйлүү маселелер, жаш муундар, базар экономикасы ж.б... Аннотация. В статье затронута одна из актуальных проблем современности – достойное воспитание молодого поколения. Статья рассматривает проблематику воспитания молодежи и формирования общечеловеческих ценностей. В статье речь идет о роли произведений Чингиза Айтматова в воспитании молодежи. В условиях перехода в новый социально-экономический период меняется нравственно-духовный мир молодежи, в том числе у студентов. С этой точки зрения на первый план выходит задача формирования общечеловеческих ценностей, которые должны стать главным объединяющим фактором дальнейшего социокультурного развития общества. Обогащение опыта глубокого понимания общечеловеческих ценностей у будущих педагогов в профессиональном обучении способствует формированию подготовленности будущих педагогов профессионального обучения в будущем, также важно привить в них систему общечеловеческих ценностей. Ключевые слова: общечеловеческие ценности, гуманность, нравственно-этические принципы, духовные ценности, рыночная экономика. Annotation. the article touches on one of the pressing problems of our time - the decent education of the younger generation. The article considers the issues of youth education and the formation of universal values. The article deals with the role of the works of Chingiz Aitmatov in the education of youth. With the transition to a new socio- economic period, the moral and spiritual world of young people is changing, including among students. From this point of view, the task of creating universal human values comes to the forefront, which should become the main unifying factor in the further socio-cultural development of society. The enrichment of the experience of a deep understanding of human values in future teachers contributes to the formation of preparedness of future teachers of vocational training in the future, it is also important to instill in them a system of universal values. Keywords: universal values, humanity, thinker, wise, moral and ethical principles, spiritual values, market economy.

scholarly journals Sex-Specific Differences in Glioblastoma

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1783
Author(s):  
Anna Carrano ◽  
Juan Jose Juarez ◽  
Diego Incontri ◽  
Antonio Ibarra ◽  
Hugo Guerrero Cazares
Keyword(s):  
Sex Differences ◽  
Immune System ◽  
Molecular Level ◽  
Deep Understanding ◽  
Protective Role ◽  
Men And Women ◽  
Individualized Approach ◽  
Male Patients ◽  
Outcome Differences

Sex differences have been well identified in many brain tumors. Even though glioblastoma (GBM) is the most common primary malignant brain tumor in adults and has the worst outcome, well-established differences between men and women are limited to incidence and outcome. Little is known about sex differences in GBM at the disease phenotype and genetical/molecular level. This review focuses on a deep understanding of the pathophysiology of GBM, including hormones, metabolic pathways, the immune system, and molecular changes, along with differences between men and women and how these dimorphisms affect disease outcome. The information analyzed in this review shows a greater incidence and worse outcome in male patients with GBM compared with female patients. We highlight the protective role of estrogen and the upregulation of androgen receptors and testosterone having detrimental effects on GBM. Moreover, hormones and the immune system work in synergy to directly affect the GBM microenvironment. Genetic and molecular differences have also recently been identified. Specific genes and molecular pathways, either upregulated or downregulated depending on sex, could potentially directly dictate GBM outcome differences. It appears that sexual dimorphism in GBM affects patient outcome and requires an individualized approach to management considering the sex of the patient, especially in relation to differences at the molecular level.

Is Co-working Increase Survivability? Study on how Collaborating and Networking Facilitates Open Innovation Process for Startups

2020 ◽  
Vol 7 (2) ◽  
pp. 68-75
Author(s):  
Elissa Dwi Lestari
Keyword(s):  
Open Innovation ◽  
Deep Understanding ◽  
Innovation Process ◽  
Future Research ◽  
Innovation Ecosystem ◽  
Quantitative Studies ◽  
Multiple Case ◽  
Start Ups ◽  
Community Manager

Startups, as they are bounded to their liabilities of newness and smallness, need to collaborate extensively with their external partners through the open innovation process. This study aims to depict Co-working space's pivotal role in building up a working innovation ecosystem that facilitates open innovation for startups. To get a more deep understanding of the phenomena, this study used an exploratory study based on three case studies of Co-working spaces operated in the Jakarta region. The study shows that the open innovation process among startups is not naturally existed, but instead, it is purposefully designed by the role of a community manager who acts as the ecosystem catalyst. The community manager becomes the ecosystem enablers that facilitate the networking process by connecting members. As a result, these activities will help the emerging of mutual connection and collaboration processes among members that empower open innovation among startups members. The multiple-case design makes the study conclusions might be difficult to generalize. Future research, including quantitative studies, will help the conclusions examination and the knowledge enrichment of start-ups' open innovation process. This paper will enrich the knowledge concerning how Co-working spaces member seizing opportunities that lead to the open innovation process.

scholarly journals WOMAN AS A ‘TRANSFORMER’ IN PAULO COELHO’S THE ZAHIR

2020 ◽  
pp. 181-185
Author(s):  
Jagdish Joshi ◽  
Neha Hariyani
Keyword(s):  
Significant Role ◽  
Deep Understanding ◽  
Central Position ◽  
Seminal Work

Paulo Coelho is an eminent Brazilian writer of the present times. His novels reflect his deep understanding of mythology and mysticism and are a blend of tradition and modernity. Woman plays a significant role in the metamorphosis of the protagonist in Coelho’s novels. This paper intends to study the role of woman in his novel The Zahir, in the light of Campbell’s theory of Initiation in his seminal work The Hero with a Thousand Faces. Campbell’s theory of Initiation accords a central position to woman. She performs various roles and becomes instrumental in bringing about the transformation of the hero. The more the hero initiates into his adventure, the more fascinating does he find the woman, changing herself in accordance with the needs of the hero as dictated by destiny Initially, woman in The Zahir seems to hold a subordinate position. She is even regarded as a mere commodity by the hero. But as the narrative develops, the role of the woman, true to Campbell’s remark undergoes a series of transfigurations, the deeper the hero initiates into his inner quest the subtler the woman becomes. From a mere commodity the woman transfigures into a guide, from a guide into a divine energy, capable of bringing about the inner transformation of the hero.

scholarly journals Vertical Delivery as a Method of Prevention of Obstetric and Perinatal Complications

2019 ◽  
Vol 4 (5) ◽  
pp. 7-13
Author(s):  
M. N. Mochalova ◽  
S. V. Novokshanovа ◽  
V. A. Mudrov
Keyword(s):  
Upright Position ◽  
Alternative Methods ◽  
Vertical Position ◽  
Perinatal Complications ◽  
Systematic Analysis ◽  
Birth Canal ◽  
Early Postpartum ◽  
Analysis And Synthesis ◽  
Selection Of

Currently, there are many points of view on management of physiological labor, in particular, it concerns the intrapartum position of a woman. Tactics of modern obstetrics should ensure the safety of motherhood, which in future ensures the prosperity of the state. One of the alternative methods of delivery is the vertical position of a woman in the intrapartum period. It is impossible to describe the whole range of possible positions of a woman in the intrapartum period, the common ones being: lying position (lateral, reclining, lithotomy, Trendelenburg’s, etc.) or upright position (sitting, using a chair for childbirth, standing, squatting, standing on the knees, etc.). Opinions about how the vertical position of a mother in the intrapartum period affects the outcome of childbirth are quite ambiguous. The conclusions of various authors on that matter often contradict each other.The aim of the research was to study the role of vertical delivery in reducing the frequency of obstetric and perinatal complications.Materials: publications of foreign and domestic authors within the period from 1989 to 2017.Methods: systematic analysis and synthesis of literature data.Conclusion: Despite a significant number of studies, it is not possible to determine the universality of the vertical position in childbirth, therefore, the selection of patients for the management of vertical childbirth should be approached carefully. In the presence of pregnancy complications, preference should be given to the classic version of the position in childbirth. In women who have a low risk of perinatal complications, an upright position can be a worthy alternative. To prevent the development of bleeding in the III stage of labor and the early postpartum period, a woman should take a horizontal position after the birth of the fetus. This condition must also be observed when examining the birth canal. Thus, the rational tactics of conducting childbirth is to determine the optimal combination of vertical and horizontal positions at different periods of the childbirth process, taking into account the convenience for the woman in labor. 

scholarly journals A European convergence towards a stare decisis model?

2015 ◽  
pp. 173 ◽  
Author(s):  
Stefano Civitarese
Keyword(s):  
Rule Of Law ◽  
Deep Understanding ◽  
The European Union ◽  
Stare Decisis ◽  
The Rule Of Law ◽  
Law System ◽  
Legal Space ◽  
The One ◽  
The Relationship

The article revolves around the doctrine of precedent within the so-called European legal space, wondering whether and to what extent we can speak of a convergence towards a stare decisis model boosted by the harmonizing role of the Court of Justice of the European Union. The article argues that although there are still some differences between civil law and common law legal systems they regard more the style of reasoning and the deep understanding of the relationship between the present decision of a court and past judicial decisions than the very existence of the constraints of the latter upon the former. The article concludes that a sort of mechanism of stare decisis has in fact been created, even though, on the one hand, uncertainty remains as to the way in which the binding force of a precedent concretely operates in the system, and on the other hand, this mechanism relates exclusively to the relationships between past and future decisions of higher courts (horizontal effect). This change, far from being a shift towards a truly judge-made law system or a consequence of the final abandonment of the dictates of the rule of law, enhances legal certainty contributing to the fundamental requirement of stability of law as a feature of the ideal of the rule of law.

A mechanism for jet drift over topography

2018 ◽  
Vol 845 ◽  
pp. 392-416 ◽  
Author(s):  
Hemant Khatri ◽  
Pavel Berloff
Keyword(s):  
Bottom Topography ◽  
Vertical Shear ◽  
Dissipative Systems ◽  
Dynamical Equations ◽  
Nonlinear Stress ◽  
Multiple Jets ◽  
Baroclinic Model ◽  
The One ◽  
Constant Slope

The dynamics of multiple alternating oceanic jets has been studied in the presence of a simple bottom topography with constant slope in the zonal direction. A baroclinic quasi-geostrophic model forced with a horizontally uniform and vertically sheared background flow generates mesoscale eddies and jets that are tilted from the zonal direction and drift with constant speed. The governing dynamical equations are rewritten in a tilted frame of reference moving with the jets, and the cross-jet time-mean profiles of the linear and nonlinear stress terms are analysed. Here, the linear stress terms are present because of the zonally asymmetric topography. It is demonstrated that the linear dynamics controls the drift mechanism. Also, it is found that the drifting jets are directly forced by the imposed vertical shear, whereas the eddies oppose the jets, although this is limited to continuously forced dissipative systems. This role of the eddies is opposite to the one in the classical baroclinic model of stationary, zonally symmetric multiple jets. This is expected to be more generic in the ocean, which is zonally asymmetric nearly everywhere.

Women Entrepreneurial Innovative Behavior: The Role of Lean start-up and Business Coaching

2021 ◽  
Vol 39 (8) ◽  
Author(s):  
Rimsha Khalid ◽  
Mohsin Raza ◽  
Anusara Sawangchai ◽  
Wendy July Allauca-Castillo ◽  
Rosario Mercedes Huerta-Soto
Keyword(s):  
Deep Understanding ◽  
Mediating Effect ◽  
Work Behavior ◽  
Innovative Behavior ◽  
Business Coaching ◽  
Innovative Work Behavior ◽  
Start Up ◽  
Innovative Work ◽  
Entrepreneurial Action

The main objective of a startup is to discover a suitable plan of action that can create value for growth in the economy. This research provides evidence and allied vision engrossed on three perspectives: business coaching, lean start-up approach, and innovative work behavior of women's context in solar energy entrepreneurial action. Moreover, the study is based on a quantitative method, and results indicated that it has a significant impact on the lean start-up approach on innovative work behavior and has a significant mediating effect on business coaching. This study helps researchers and practitioners cope with the entrepreneurial incubation programs for women entrepreneurs in the lean start-up approach. Moreover, this also contributes to the deep understanding of women's exploring, building, and implementing business ideas. Additionally, the study argues that guidance and directions are important for innovative entrepreneurial actions.

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