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314 tulosta hakusanalla Shaimaa Saad

Badania fitochemiczne i biologiczne fiolka wonnego uprawianego w Iraku

Badania fitochemiczne i biologiczne fiolka wonnego uprawianego w Iraku

Shaimaa Fakhri; Bushra M. Jaber

Wydawnictwo Nasza Wiedza
2025
nidottu
Książka stanowi przegląd niekt rych metabolit w wt rnych występujących w fiolku wonnym (Viola odorata L.), zebranych w szk lce roślin w Bagdadzie w okresie od kwietnia do lipca, a następnie poddanych frakcjonowaniu i izolacji stigmasterolu i β-sitosterolu. Badania biologiczne wykazaly dzialanie stigmasterolu i β-sitosterolu występujących w fiolku wonnym (Viola odorata L.) jako przeciwutleniaczy i środk w przeciwbakteryjnych.... Ekstrakcja stigmasterolu i β-sitosterolu jako surowego ekstraktu z każdej części korzeni, liści, kwiat w i nasion rośliny przy użyciu (eteru naftowego i metanolu) w celu jakościowej i ilościowej oceny stigmasterolu i β-sitosterolu w każdej części rośliny przy użyciu TLC, HPLC i CC.
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Conservazione genetica in vitro delle cultivar di patata

Conservazione genetica in vitro delle cultivar di patata

Shaimaa M I Al-Ahmer; Iman J Abdul Rasool; Hussam S M Khierallah

Edizioni Sapienza
2026
pokkari
Poich sembrava che la conoscenza umana dell'arte dell'agricoltura e l'importanza economica della pianta avessero contribuito in parte alla conservazione del germoplasma. La patata una delle specie coltivate pi comuni sulla terra e si colloca al quarto posto tra le colture prodotte dopo mais, riso e grano. A causa dell'elevato numero di variet e specie correlate, la patata nota per avere la pi ricca diversit genetica tra tutte le piante coltivate. Per prevenire la perdita delle risorse genetiche della patata, la conservazione a lungo termine del materiale vegetale viene effettuata in banche genetiche e collezioni private in tutto il mondo. Questo libro descrive la conservazione genetica in vitro della patata mediante diverse tecniche, sfruttando la tecnologia della coltura di tessuti vegetali nella conservazione delle risorse genetiche in tre modi: crioconservazione, crescita lenta e produzione di microtuberi, verificando la vitalit dei materiali vegetali dopo ogni periodo di conservazione e valutando le prestazioni sul campo delle piante in vitro derivate da ciascun metodo di conservazione. Tutti questi aspetti e altri sono discussi e illustrati con fotografie.
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Preservação genética in vitro de cultivares de batata

Preservação genética in vitro de cultivares de batata

Shaimaa M I Al-Ahmer; Iman J Abdul Rasool; Hussam S M Khierallah

Edicoes Nosso Conhecimento
2026
pokkari
Como parecia que o conhecimento humano sobre a arte da agricultura e a import ncia econ mica da planta contribu ram para a conserva o do germoplasma. A batata uma das esp cies cultivadas mais comuns na Terra e ocupa o quarto lugar entre as culturas produzidas, depois do milho, do arroz e do trigo. Devido ao elevado n mero de variedades e esp cies relacionadas, a batata conhecida por ter a diversidade gen tica mais rica de todas as plantas cultivadas. Para evitar a perda de recursos gen ticos da batata, a conserva o a longo prazo do material vegetal realizada em bancos de genes e cole es privadas em todo o mundo. Este livro descreve a preserva o gen tica in vitro da batata por diferentes t cnicas, aproveitando a tecnologia na cultura de tecidos vegetais na conserva o de recursos gen ticos de tr s maneiras: criopreserva o, crescimento lento e produ o de microtub rculos, verificando a vitalidade dos materiais vegetais ap s cada per odo de m todos de preserva o, bem como avaliando o desempenho no campo das plantas in vitro derivadas de cada m todo de preserva o. Todos esses aspectos e outros s o discutidos e ilustrados com fotografias.
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Préservation génétique in vitro des cultivars de pomme de terre

Préservation génétique in vitro des cultivars de pomme de terre

Shaimaa M I Al-Ahmer; Iman J Abdul Rasool; Hussam S M Khierallah

Editions Notre Savoir
2026
pokkari
Il semble que les connaissances humaines en mati re d'agriculture et l'importance conomique de cette plante aient contribu la conservation d'une partie du mat riel g n tique. La pomme de terre est l'une des esp ces cultiv es les plus courantes sur terre et se classe au quatri me rang des cultures produites apr s le ma s, le riz et le bl . En raison du nombre lev de vari t s et d'esp ces apparent es, la pomme de terre est connue pour avoir la plus grande diversit g n tique de toutes les plantes cultiv es. Afin d' viter la perte des ressources g n tiques de la pomme de terre, la conservation long terme du mat riel v g tal est assur e dans des banques de g nes et des collections priv es travers le monde. Cet ouvrage d crit la pr servation g n tique in vitro de la pomme de terre l'aide de diff rentes techniques, en exploitant la technologie de la culture de tissus v g taux dans la conservation des ressources g n tiques de trois mani res: la cryoconservation, la croissance lente et la production de microtubercules, en v rifiant la vitalit du mat riel v g tal apr s chaque p riode de pr servation et en valuant les performances sur le terrain des plantes in vitro issues de chaque m thode de pr servation. Tous ces aspects et d'autres sont abord s et illustr s par des photographies.
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Atlas of Anorectal Anomalies

Atlas of Anorectal Anomalies

Amr Abdelhamid Zaki AbouZeid; Shaimaa Abdelsattar Mohammad

Springer International Publishing AG
2022
sidottu
This volume provides an in-depth analysis of abnormal pelvic anatomy in various forms of anorectal anomalies, often with multiple associations. The anatomy of the pelvis is one of the most complex in the body, and anatomists have provided detailed descriptions of normal anatomy based on cadaver dissections. However, congenital abnormalities present a spectrum of deviations from normal, which can be difficult to perceive with surgical practice alone. The advent of cross-sectional imaging has fortunately provided a powerful tool, allowing clinicians to study these anomalies in depth and on multiple planes. This volume will be an essential tool to better understand this spectrum of alterations in a critical region of the body, thus helping pediatric surgeons make the correct planning for a solid reconstruction of the abnormality.
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Atlas of Anorectal Anomalies

Atlas of Anorectal Anomalies

Amr Abdelhamid Zaki AbouZeid; Shaimaa Abdelsattar Mohammad

Springer International Publishing AG
2023
nidottu
This volume provides an in-depth analysis of abnormal pelvic anatomy in various forms of anorectal anomalies, often with multiple associations. The anatomy of the pelvis is one of the most complex in the body, and anatomists have provided detailed descriptions of normal anatomy based on cadaver dissections. However, congenital abnormalities present a spectrum of deviations from normal, which can be difficult to perceive with surgical practice alone. The advent of cross-sectional imaging has fortunately provided a powerful tool, allowing clinicians to study these anomalies in depth and on multiple planes. This volume will be an essential tool to better understand this spectrum of alterations in a critical region of the body, thus helping pediatric surgeons make the correct planning for a solid reconstruction of the abnormality.
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Literary Theory

Literary Theory

Wael Mustafa; Shaimaa El-Ateek

Noor Publishing
2021
pokkari
This book seeks to introduce readers of literature to some of the most important schools of literary theory and criticism in the 20th Century that have had significant impact on the study of literature. In each chapter, we explore and investigate the philosophical framework and the intellectual background informing the school in question as well as its main figures, its central tenets and main interpretative strategies. We look in particular for the distinctive perspective of each school regarding the definition of the nature of the relationship between text and reality, the nature of the relationship between the text and its author (the question of authorship); and the nature of the relationship linking literary theories to each other.
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Organosilanes and its applications

Organosilanes and its applications

Mansoura A Abd-El-Maksoud; Shaimaa Tarek Mansour; Marwa El-Hussieny

SCHOLARS' PRESS
2023
pokkari
Organosilicon compounds are organometallic compounds containing carbon-silicon bonds. The associated science to their synthesis and characteristics is called organosilicon chemistry. Being colourless, combustible, hydrophobic, and air-stable, the majority of organosilicon compounds have characteristics with common organic molecules. A non-organic substance is silicon carbide.Many commercial goods contain organosilicon compounds. The most popular silicone-based coatings, antifoamers, caulks (sealant), adhesives, and sealants are. Adjuvants widely employed with fungicides and herbicides in agriculture and plant control are other crucial applications.Although there are no carbon-silicon bonds in nature, enzymes have been utilised to synthesise artificial carbon-silicon bonds in living bacteria. On the other hand, diatoms have been found to contain silicates. A pyrethroid insecticide known as silafluofen is an organosilicon chemical. There are several organosilicon used as pharmaceuticals.
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Organosilane Und Ihre Anwendungen

Organosilane Und Ihre Anwendungen

Mansoura A Abd-El-Maksoud; Shaimaa Tarek Mansour; Marwa El-Hussieny

Verlag Unser Wissen
2023
pokkari
Siliciumorganische Verbindungen sind metallorganische Verbindungen mit Kohlenstoff-Silicium-Bindungen. Die Wissenschaft, die sich mit ihrer Synthese und ihren Eigenschaften befasst, wird als siliciumorganische Chemie bezeichnet. Da sie farblos, brennbar, hydrophob und luftstabil sind, weisen die meisten siliciumorganischen Verbindungen Eigenschaften auf, die denen gew hnlicher organischer Molek le entsprechen. Eine nicht-organische Substanz ist Siliciumcarbid.Viele Handelswaren enthalten siliciumorganische Verbindungen. Die g ngigsten Beschichtungen auf Silikonbasis, Antischaummittel, Dichtungsmassen, Klebstoffe und Dichtungsmittel sind. Weitere wichtige Anwendungen sind Adjuvantien, die h ufig in Fungiziden und Herbiziden in der Landwirtschaft und der Pflanzenbek mpfung eingesetzt werden.Obwohl es in der Natur keine Kohlenstoff-Silizium-Bindungen gibt, wurden Enzyme eingesetzt, um k nstliche Kohlenstoff-Silizium-Bindungen in lebenden Bakterien zu synthetisieren. Andererseits hat man festgestellt, dass Kieselalgen Silikate enthalten. Ein Pyrethroid-Insektizid namens Silafluofen ist eine siliziumorganische Chemikalie. Es gibt mehrere Organosiliziumverbindungen, die als Arzneimittel verwendet werden
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