1,358,613 research outputs found
Entrevista a Claudia Korol de Pañuelos en Rebeldía. Trayectorias en educación popular, feminista, anticapitalista y descolonizadora
No full textEntrevista a Claudia Korol de Pañuelos en Rebeldí
On the occasion of the 90th anniversary of the founder of the Odessa School of Neurosurgeons Professor Aleksandr P. Korol
No full textHonored Worker of Science and Technology of Ukraine, Doctor of Medical Sciences, Professor Alexander Pavlovich Korol was born on July 18, 1930, in Gaisin, Vinnytsia region. In 1953, Alexander Pavlovich graduated with honors from the Lviv Medical Institute and was recommended for scientific work at the Kiev Institute of Neurosurgery, where he worked until 1961. In 1961, the young scientist headed the department of neurosurgery at the Odessa Psychoneurological Institute. In 1964, A.P. Korol organized a course of neurosurgery at the Odessa Medical Institute, which he headed until 1999.Alexander Pavlovich Korol is the author of more than 300 scientific papers, 14 inventions, was a member of the Academic Council of the Odessa Medical Institute and the specialized Scientific Council of the Kiev Research Institute of Neurosurgery, the chairman of the Association of Neurosurgeons of the Odessa Region, the chief neurosurgeon of the regional health department, a member of the board of the Ukrainian Association of Neurosurgeons, a member of the editorial boards of a number of scientific journals. Under the guidance of prof. A.P. Korol for the first time in Odessa, operations were performed under controlled hypothermia and hypotension. A.P. Korol is a pioneer in the use of hyperbaric oxygenation in the treatment of patients with severe traumatic brain injury in Ukraine. Professor Korol is rightfully the founder of the Odessa School of Neurosurgeons. A prominent neurosurgeon and organizer, he was able to create and educate a scientific and practical team of neurosurgeons, create a neurosurgical center in the South of Ukraine, and his initiatives are continued and implemented by his followers and students.He passed away on December 7, 2003, at the age of 74, in Odessa
Etin Köprülü İkili ve Üçlü Porfirin-Korol Hibrit Bileşiklerinin Sentezi ve Karakterizasyonu
No full textIn recent years, increasing environmental problems result with high demands towards clean and renewable energy sources, hence solar energy as an energy resource and artificial photosynthesis have begun to be spotlight. The compounds obtained by combining porphyrin and the reduced porphyrin compound corrole in a single structure by using bridge formations are very important because these structures take role of donor-acceptor for energy transfer in mimicking photosynthesis studies and they are prefered as dye material in the third generation solar cells.
In the first part of the thesis, synthesis of ethynyl substituted porphyrin compounds and p-bromo phenyl substituted corrole compound are carried out. Then dyad porphyrin-corrole and triad corrole-porphyrin-corrole structures with ethyne bridges in meso-meso positions are synthesized by Sonogashira cross-coupling reaction.
In the second part of the thesis, structures of dyads and triads are identified by spectroscopic techniques and porphyrin macrocycle is determined as energy donor group, while corrole acts as a energy acceptor in these structures.Son yıllarda giderek artan çevre sorunları, temiz ve yenilenebilir enerji kaynağı arayışları, güneş enerjisinin enerji kaynağı olarak kullanılması ve yapay fotosentez gibi konulara olan ilgiyi artırmaktadır. Porfirin ve daraltılmış porfirin sınıfında yer alan korol bileşiğinin tek bir yapıda çeşitli köprüler vasıtasıyla bir araya getirilmesi ile elde edilen bileşikler fotosentez taklit çalışmalarında enerji transferinin gerçekleştirilmesi için gerekli olan alıcı-verici çiftinin oluşturulması ve üçüncü nesil güneş hücrelerinde boya maddesi olarak kullanılmaları nedeniyle oldukça önemli yapılardır.
Tez çalışması kapsamında öncelikle etinil grupları içeren porfirin bileşiklerinin ve p- bromo fenil sübstitüe bakır-korol bileşiklerinin sentezi ve bu bileşiklerin Sonogashira çapraz kenetlenme tepkimesi sonucunda mezo-mezo pozisyonlarından etin köprüsü ile bağlanmış ikili porfirin-korol ve üçlü korol-porfirin-korol yapılarının sentezi gerçekleştirilmiştir.
Çalışmanın bir sonraki adımında sentezi gerçekleştirilen ikili ve üçlü bileşiklerin yapıları spektroskopik yöntemler kullanılarak aydınlatılmış ve sentezlenen bileşiklerde porfirin makro halkasının enerji verici, korol makro halkasının ise enerji alıcı olarak davrandığı sonucuna ulaşılmıştır
On the occasion of the 90th anniversary of the founder of the Odessa School of Neurosurgeons Professor Aleksandr P. Korol
No full textЗаслуженный деятель науки и техники Украины, доктор медицинских
наук, профессор Александр Павлович Король родился 18 июля 1930
года. В 1953 году Александр Павлович окончил с отличием Львовский
медицинский институт и был рекомендован на научную работу в Киевский
институт нейрохирургии, где проработал до 1961 года. В 1961 году молодой
ученый возглавил отдел нейрохирургии в Одесском психоневрологическом
институте. В 1964 году А.П. Король организовал курс нейрохирургии в
Одесском медицинском институте, которым руководил до 1999 года.
Александр Павлович Король ‒ автор и соавтор более 300 научных работ
и 14 изобретений. Был членом Ученого совета Одесского медицинского
института и специализированного Ученого совета Киевского НИИ
нейрохирургии, председателем Ассоциации нейрохирургов Одесской
области, главным нейрохирургом областного отдела здравоохранения,
членом правления Украинской ассоциации нейрохирургов, членом
редколлегий ряда научных журналов. Под руководством проф. Короля
впервые в Одессе были выполнены операции под управляемой
гипотермией и гипотонией. А.П. Король является пионером применения
гипербарической оксигенации в лечении больных с тяжелой черепномозговой травмой в Украине. Александр Павлович ‒ основатель Одесской
школы нейрохирургов. Видный нейрохирург и организатор, он смог
объединить и воспитать научно-практический коллектив нейрохирургов,
создать нейрохирургический центр на Юге Украины, а его начинания
продолжают и воплощают в жизнь последователи и ученики.
Он ушел из жизни 7 декабря 2003 года на 74-м году жизни в Одессе.Honored Worker of Science and Technology of Ukraine, Doctor of Medical
Sciences, Professor Alexander Pavlovich Korol was born on July 18, 1930,
in Gaisin, Vinnytsia region. In 1953, Alexander Pavlovich graduated with
honors from the Lviv Medical Institute and was recommended for scientific
work at the Kiev Institute of Neurosurgery, where he worked until 1961. In
1961, the young scientist headed the department of neurosurgery at the
Odessa Psychoneurological Institute. In 1964, A.P. Korol organized a course
of neurosurgery at the Odessa Medical Institute, which he headed until 1999.
Alexander Pavlovich Korol is the author of more than 300 scientific papers,
14 inventions, was a member of the Academic Council of the Odessa Medical
Institute and the specialized Scientific Council of the Kiev Research Institute
of Neurosurgery, the chairman of the Association of Neurosurgeons of the
Odessa Region, the chief neurosurgeon of the regional health department, a
member of the board of the Ukrainian Association of Neurosurgeons, a member
of the editorial boards of a number of scientific journals. Under the guidance of
prof. A.P. Korol for the first time in Odessa, operations were performed under
controlled hypothermia and hypotension. A.P. Korol is a pioneer in the use of
hyperbaric oxygenation in the treatment of patients with severe traumatic
brain injury in Ukraine. Professor Korol is rightfully the founder of the Odessa
School of Neurosurgeons. A prominent neurosurgeon and organizer, he was
able to create and educate a scientific and practical team of neurosurgeons,
create a neurosurgical center in the South of Ukraine, and his initiatives are
continued and implemented by his followers and students.
He passed away on December 7, 2003, at the age of 74, in Odessa
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A generalized stem model for spruce forests
No full textDescription of stem forms is a basic requirement for estimating the log assortments of standing forests. The present paper presents a generalized stem model for spruce stands in the Carpathian mountains of the Ukraine. The study is based on a model known as the modified Brink Function, where the stem profile, the radius r at an arbitrary stem height h of a tree with total height H and breast height diameter D is described by a non-linear function r r (h; BHD; H I i, p, q) with parameters i, p and q. The three parameters can be predicted from H, D and stand basal area and the result is a generalized stem model for spruce forests. The data used in the analysis include a total of 2682 diameter-height measurement of 250 spruce sample trees subjected to a full stem analysis. The sample trees are derived from 40 spruce stands which have been subjected to different silvicultural treatments
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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