Nitin Dhawan's Books

PROCESS PARAMETERS OF AL ALLOY CASTINGS PRODUCED BY HIGH PRESSURE DIE CASTING

Aluminium Alloy Castings

By: Dharmpal Deepak,Sulakshna Dwivedi,Nitin Dhawan

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PROCESS PARAMETERS OF AL ALLOY CASTINGS PRODUCED BY HIGH PRESSURE DIE CASTING

Aluminium Alloy Castings

By: Dharmpal Deepak,Sulakshna Dwivedi,Nitin Dhawan

In the current study, an industrial product (electrical wire connector) have been casted in cold chamber die casting process using LM2 aluminium alloy to produce certain specimens to be assessed under the study for the determination of the responses ( mechanical properties such as impact strength, hardness and surface roughness). As cold chamber die casting is being popularly known for its efficient and accurate casting process which can process a broad range of castings with intricate shape easily, hence it requires a lot of study in controlling the process variables with optimum combination of process variables to produce defect free and sound casting. Therefore in the current study, the process variables such as pouring temperature (725oC, 750oC, 775oC), intensification pressure (170 kg/cm2, 180 kg/cm2, 190 kg/cm2), type of coating (oil+graphite coating, dycote+graphite coating and dycote coating) and type of cooling (air cooling, water cooling and oil cooling) have been varied at three levels and 9 different experiments have been designed using Taguchi array (L9 orthogonal array) to assess the effects of different combinations of process variables over the mechanical properties (impact strength, hardness and surface roughness). The study aims at selecting the optimum combination process variables on the basis of the responses resulted in the 9 experiments. The graphs for the responses (impact strength, hardness and surface roughness) against each process variables have been plotted and carefully observed to identify the significant process variable along with respective level of operation affecting the respective response. From the overall study, intensification pressure was concluded to be the most significant process variable with maximum contribution to the impact strength and surface finish. The micrograph images captured corresponding to the respective levels of intensification pressure (170 kg/cm2, 180 kg/cm2, 190 kg/cm2) revealed the presence of shrinkage porosity corresponding to lowest level of intensification pressure (170 kg/cm2) and with further increase in intensification pressure led to a decrease in the extent of presence of porosity. Dycote coating was considered as the most optimum coating with significant contribution to the hardness. Air cooling and oil cooling were equally significant process variables with equivalent contribution to the mechanical properties.

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BookRix

Published Date

ISBN 10

3748715587

ISBN 13

9783748715580

IAP Textbook of Pediatric & Neonatal Emergencies

By: Santosh T Soans FIAP,Nitin Chawla MBBS DNB FACEE PGCPHM

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IAP Textbook of Pediatric & Neonatal Emergencies

By: Santosh T Soans FIAP,Nitin Chawla MBBS DNB FACEE PGCPHM

Section 1 Pediatric Emergency-an introduction 1.1Medicolegal issues in Pediatric emergency 1.2Organisation of Pediatric emergency services 1.3Child abuse 1.4Communication In Ped Emergency 1.5Procedural Sedation and Analgesia Section 2 Pediatric Resuscitation and Acute life support 2.1Cardiopulmonary Resuscitation and Systemic Approach to Manage a Sick Child 2.2Airway Management and positive pressure ventilation 2.3Oxygen Therapy 2.4Respiratory Insufficiency 2.5Circulatory Failure: Shock 2.6Circulatory Failure: Arrhythmias 2.7Cardiac arrest and post Resuscitation Management 2.8Heart Failure in Children 2.9Fluid and Electrolytes 2.1Neonatal Resuscitation 2.11Anaphylaxis Section 3 Cardio Respiratory Emergencies 3.1Upper airway emergencies 3.2Acute Asthma 3.3Acute Bronchiolitis 3.4Acute Chest Pain 3.5Respiratory Failure in Children 3.6Lower Respiratory tract Infection 3.7Foreign Body 3.8Sore Throat Section 4 Renal Section 4.1Pediatric Acute Kidney Injury 4.2Acid Base disturbances 4.3Approach to edema 4.4Approach to hematuria 4.5Hypertensive urgencies 4.6Renal Replacement Therapy for Acute Kidney Injury 4.7Acute Peritoneal Dialysis in Children with Acute Kidney Injury 4.8Drug dosing in renal dysfunction Section 5 Neurological 5.1Fluid and electrolytes in Neurological disorders 5.2Acute seizure and Status epilepticus 5.3Acute headache and status migrainosus 5.4Approach to acute onset movement disorder, Status Dystonicus 5.5Approach to acute ataxia 5.6Approach to COMA 5.7Approach to acute vision loss 5.8Brain death 5.9Childhood Stroke 5.1Pediatric Neuro-immunological Emergencies Section 6 Gastroenterological emergencies-(Medical) 6.1Acute abdomen 6.2Approach to Diarrhoea & Dysentery 6.3Approach to upper GI Bleed 6.4Acute Liver failure Section 7 Other Systemic Emergencies 7.1Approach to Rheumatological emergencies 7.2Approach to Oncological emergencies 7.3Approach to hematological emergencies 7.4Approach to metabolic emergencies 7.5Approach to Tropical disease in emergencies 7.6Diabetic Ketoacidosis 7.7Adrenal Emergencies Section 8 Neonatal Section 8.1Neonatal shock and hemodynamic monitoring 8.2Respiratory Failure in newborn 8.3Neonatal cardiac emergencies 8.4Neonatal Jaundice 8.5Neonatal Seizures 8.6Neonatal Acute Kidney Injury 8.7Neonatal Hyperglycemia 8.8Neonatal Hypoglycemia 8.9Management of bleeding neonate 8.1Neonatal Transport Section 9 Surgical Emergencies 9.1Acute Abdomen in children 9.2Urological emergencies 9.3Ophthalmological Emergencies 9.4ENT emergencies 9.5 Orthopaedic emergencies 9.6Oral emergencies Section 10 Environmental Emergencies 10.1Electrical Burns 10.2 Drowning 10.3Heat Stroke Section 11 Toxicology 11.1General Approach to Child with Poisoning 11.2Analgesics 11.3Common Drugs 11.4Household products and Pesticides 11.5Natural Toxins and Envenomation's 11.6Foods, Dietary & Metals Section 12 Procedures 12.1Vascular access 12.2Pulse Oximetry 12.3Urinary catheterization 12.4Thoracocentesis 12.5Suprapubic aspiration 12.6Heimlich Manoeuver 12.7Cervical spine stabilization Appendix -1 13Approaches (Algorithm) Appendix -2 14Drugs

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765

Publisher

Jaypee Brothers Medical Publishers

Published Date

ISBN 10

9352709829

ISBN 13

9789352709823

Algorithms in Pediatrics

By: Nitin K Shah

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Algorithms in Pediatrics

By: Nitin K Shah

Algorithms in Pediatrics uses an algorithm-based approach to various paediatric disorders. The book is divided into nineteen sections covering all paediatric specialties and sub-specialties, from neonatology, through to haematology and oncology. Later sections focus on other important topics in paediatrics including emergencies in office practice, intensive care, and a final section on paediatric surgery. Every section presents algorithms based on patient history, physical examination, and laboratory studies, using a step-by-step approach. Clinical evaluation, diagnosis, treatment and management are also included, with clinical pearls throughout and key points at the end of each section, making this an ideal resource for post-graduates and paediatricians. Key Points Comprehensive, step-by-step guide to a range of paediatric disorders Nineteen sections covering all paediatric specialities and sub-specialities Clinical pearls and key points summary in each section

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Page Count

825

Publisher

JP Medical Ltd

Published Date

ISBN 10

9351521605

ISBN 13

9789351521600

R.N. Kao

Gentleman Spymaster

By: Nitin A Gokhale

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R.N. Kao

Gentleman Spymaster

By: Nitin A Gokhale

Somewhere deep in the archives of the Nehru Memorial Museum and Library (NMML) in the heart of New Delhi lies a set of papers that researchers and historians interested in recording the history of Indian intelligence, would love to get their hands on. Alas, those documents-transcripts of tape-recorded conversations with RN Kao, the legendary spy chief-are not going to be available until 2025, according to instructions left by him, months before he passed away in 2002. So until those tapes and papers are made public, any biography of Rameshwar Nath Kao or 'Ramji' to friends, colleagues and family would have to depend on personal memories of a vast array of individuals who knew him in different capacities and their interpretation of his personality and contribution.

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Page Count

215

Publisher

Bloomsbury Publishing

Published Date

ISBN 10

9389449308

ISBN 13

9789389449303

Book's by Nitin Dhawan

PROCESS PARAMETERS OF AL ALLOY CASTINGS PRODUCED BY HIGH PRESSURE DIE CASTING

PROCESS PARAMETERS OF AL ALLOY CASTINGS PRODUCED BY HIGH PRESSURE DIE CASTING

IAP Textbook of Pediatric & Neonatal Emergencies

IAP Textbook of Pediatric & Neonatal Emergencies

Algorithms in Pediatrics

Algorithms in Pediatrics

R.N. Kao

R.N. Kao

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