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169 tulosta hakusanalla Keyur Parmar

Experimentelle Untersuchung des Mikro-EDM-Bohrprozesses

Experimentelle Untersuchung des Mikro-EDM-Bohrprozesses

Keyur Parmar

Verlag Unser Wissen
2025
pokkari
Dieses Buch untersucht experimentell die Auswirkung der Ausgangsparameter von Durchgangsbohrungen durch Variation der Betriebsparameter des Mikro-Elektroerosionsprozesses ( -EDM). Zur Ermittlung der optimalen Werte der Ausgabeparameter wird eine Varianzanalyse durchgef hrt. W hrend der Experimente wird der Bohrvorgang an Hartmetallmaterial durchgef hrt, wobei Betriebsparameter wie Strom, Impuls-Einschaltzeit und Impuls-Ausschaltzeit variiert werden. Die Auswirkungen dieser Betriebsparameter werden anhand von Ausgabeparametern wie Konizit t, MRR und TW sowie berma berpr ft. Abschlie end werden die Ergebnisse mithilfe einer ANOVA-Analyse ausgewertet.
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Étude expérimentale du processus de micro-perçage par électroérosion

Étude expérimentale du processus de micro-perçage par électroérosion

Keyur Parmar

Editions Notre Savoir
2025
pokkari
Cet ouvrage tudie de mani re exp rimentale l'effet des param tres de sortie d'un micro-trou traversant en faisant varier les param tres de fonctionnement du processus d' lectro rosion micro ( -EDM). Le processus d'analyse de variance est utilis pour d terminer les valeurs optimales des param tres de sortie. Au cours des exp riences, le processus de per age est effectu sur un mat riau en carbure en faisant varier les param tres de fonctionnement tels que le courant, la dur e d'activation et la dur e de d sactivation des impulsions. L'effet de ces param tres de fonctionnement est v rifi sur des param tres de sortie tels que la conicit , le MRR, le TW et la surcoupe. Enfin, les r sultats sont analys s l'aide du processus ANOVA.
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Indagine sperimentale sul processo di foratura micro EDM

Indagine sperimentale sul processo di foratura micro EDM

Keyur Parmar

Edizioni Sapienza
2025
pokkari
Questo libro studia in modo sperimentale l'effetto dei parametri di uscita dei microfori variando i parametri operativi del processo di microelettroerosione ( -EDM). Il processo di analisi della varianza viene utilizzato per individuare i valori ottimali dei parametri di output. Durante gli esperimenti, il processo di foratura viene eseguito su materiale in carburo variando i parametri operativi quali corrente, tempo di impulso ON e tempo di impulso OFF. L'effetto di questi parametri operativi viene verificato sui parametri di output quali conicit , MRR e TW e sovrametallo. Infine, i risultati vengono analizzati utilizzando il processo ANOVA.
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Badania eksperymentalne procesu wiercenia mikro EDM

Badania eksperymentalne procesu wiercenia mikro EDM

Keyur Parmar

Wydawnictwo Nasza Wiedza
2025
pokkari
W niniejszej publikacji przeprowadzono badania eksperymentalne dotyczące wplywu parametr w wyjściowych mikrootwor w poprzez zmianę parametr w roboczych procesu mikroelektroerozyjnej obr bki elektroerozyjnej ( -EDM). W celu ustalenia optymalnych wartości parametr w wyjściowych zastosowano analizę wariancji. Podczas eksperyment w proces wiercenia przeprowadzono na materiale węglowym, zmieniając parametry operacyjne, takie jak prąd, czas trwania impulsu i czas przerwy między impulsami. Wplyw tych parametr w operacyjnych sprawdzono na parametrach wyjściowych, takich jak stożkowatośc, MRR i TW oraz nadcięcie. Na koniec wyniki przeanalizowano za pomocą procesu ANOVA.
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Investigação experimental do processo de perfuração por micro-EDM

Investigação experimental do processo de perfuração por micro-EDM

Keyur Parmar

Edicoes Nosso Conhecimento
2025
pokkari
Este livro investiga experimentalmente o efeito dos par metros de sa da de microfuros, variando os par metros operacionais do processo de microeletroeros o ( -EDM). O processo de an lise de vari ncia utilizado para determinar os valores timos dos par metros de sa da. Durante as experi ncias, o processo de perfura o realizado em material de carboneto, variando os par metros operacionais, como corrente, tempo de pulso ligado e tempo de pulso desligado. O efeito desses par metros operacionais verificado nos par metros de sa da, como conicidade, MRR e TW e sobrecorte. Por fim, os resultados s o analisados utilizando o processo ANOVA.
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BEA WebLogic Server Administration

BEA WebLogic Server Administration

Keyur Shah; Ali Akbar

Osborne/McGraw-Hill
2002
pokkari
J2EE; Short for Java 2 Platform Enterprise Edition. J2EE is a platform-independent, Java-centric environment from Sun for developing, building and deploying Web-based enterprise applications online. The J2EE platform consists of a set of services, APIs, and protocols that provide the functionality for developing multitiered, Web-based applications. Some of the key features and services of J2EE: At the client tier, J2EE supports pure HTML, as well as Java applets or applications. It relies on Java Server Pages and servlet code to create HTML or other formatted data for the client. Enterprise JavaBeans (EJBs) provide another layer where the platform's logic is stored. An EJB server provides functions such as threading, concurrency, security and memory management. These services are transparent to the author. Java Database Connectivity (JDBC), which is the Java equivalent to ODBC, is the standard interface for Java databases. The Java servlet API enhances consistency for developers without requiring a graphical user interface.
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Antibiotics in Pediatric Dentistry

Antibiotics in Pediatric Dentistry

Keyur Dhruv

Lap Lambert Academic Publishing
2024
pokkari
Antibiotics in Pediatric Dentistry is a specialized resource that explores the use and application of antibiotics in the treatment of dental conditions in children. The book covers the principles of antibiotic therapy, including indications, dosages, and potential side effects, with a focus on pediatric patients. It also addresses specific dental conditions such as infections, abscesses, and post-surgical care, providing guidance on when antibiotics are necessary versus when they should be avoided to prevent resistance. In addition, the book emphasizes the importance of considering the unique physiological and developmental factors of children when prescribing antibiotics, and offers practical insights for pediatric dentists in making informed clinical decisions.
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Syntheses & Applications of Steroid-Amino Acid Conjugates & Complexes

Syntheses & Applications of Steroid-Amino Acid Conjugates & Complexes

Keyur Pandya

LAP Lambert Academic Publishing
2019
pokkari
Sesquiterpenoid- and steroid-amino acid conjugates demonstrate a broad array of interesting biological properties, as the different segments of the conjugate function collectively to regulate conformation, recognition, transport and solubility. The current project involved developing a facile methodology to synthesize metabolically stable facially amphiphilic conjugates by appending either amino acids (chapter 2) or cationic metal ligand-amino acid complexes (chapter 3) as hydrophilic segments on steroid progesterone and sesquiterpene amorpha-4,11-diene scaffolds. Aminosteroids and C-11 substituted steroids have attracted long lasting interest due to their diverse pharmacological properties. As the stereoselective C- 11β functionalization of a steroid imposes severe steric hindrance due to the C-18 and C-19 angular methyl groups, access to 11β-aminoprogesterone is a challenge. Chapter 2 describes stereoselective syntheses of a new family of aminosteroids: 11β-aminoprogesterone (11 -NH2-Pro) (76) and its derivatives, including its glycine 77 and L-/D- alanine- 78/79 based conjugates, by nucleophilic substitution or reductive amination.
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Green Chemistry

Green Chemistry

Keyur Pandya

LAP Lambert Academic Publishing
2019
pokkari
The development of green catalysts (organocatalysts) for fundamental carbon-carbon bond forming reactions is challenging. The organocatalytic Michael addition of ketones to nitroalkenes is of special interest as it generates two contiguous stereocenters and the products (γ- nitro ketones) are useful intermediates. This reaction can be efficiently catalyzed by pyrrolidine-based chiral, secondary diamines and triamines. The use of a protic acid in conjunction with the amine catalyst is beneficial and the Michael addition products (syn diastereomers) are obtained with excellent enantioselectivities (up to 99% ee) and diastereoselectivity (up to 50:1 dr) for cyclic ketones and nitroalkenes derived from aromatic aldehydes. The effect of changes in the catalyst and protic acid structure, variation of catalyst/protic acid combinations and effect of structural changes in the ketone and nitroalkenes are discussed. The application of the chiral triamines in Michael reactions involving iminium ion intermediates has been examined. The attempted syntheses of pyrrolidine-based organocatalysts with guanidine-containing side chains as well as catalysts based on the camphor scaffold are presented.
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