CONTENTS

1. Fabrication and Characterization of Heterojunction of Pb_1-x Sr_xS with CdS and Cd_1-xZn_xS
   Mukesh Kumar…………………………………………………..…………………………………1-2
2. Reliability Analysis of Two Non-Identical Unit System Having Master And Helping Unit With Two Repairman
   Ashok Kumar Sharma…………………………………………………………………………3-11
3. Study of CMC and Micelle Formation of Anionic and Cationic Surfactants with respect to Temperature, Counter Ions, Solvents and Dioxane
   Mayank……………………………………………………………………………………………..12-17
4. Mechanical and Thermophysical Properties of Molybdenum: An Ultrasonic Study
   Arvind Kumar Tiwari and Mukesh Kumar…………………………………………18-21
5. Surfactants and their Recent Biological Application in the Medical and Pharmaceutical Field
   Mukesh Chand and Pradeep Kumar…………………………….…………………..22-28
6. Physico-Chemical Properties and DFT Calculations of Cuminaldehyde Using Gaussian Basis Set
   Sachin Kumar……………………………………………….…………………………………..29-40
7. Magnetic And Conductivity Studies in Iron Doped Alkali Titanate
   Nansy Sharma……………………………………….…………………………………………41-47
8. Efficiency of Double Sampling for Stratification Compared to Simple Random Sampling
   Seema Raj……………………………….……………………………………………………….48-53
9. Vibrational Spectral Studies, Thermodynamic Properties, And Molecular Orbital Analysis of 4-Methoxybenzaldehyde (p-Anisaldehyde) By D F T
   Sachin Kumar ……………………….………………………………….……………………..54-63
10. Effect of Bacterial Metabolites on Plant Seed Germination
    Vagmi Singh, Simpal Kumari, Parul, Deepak Chand Sharma,
    Dushyant Tyagi ……………………………………………………………………………….64-74
11. New Efficient Class of Estimator in Case of Measurement Errors Using Simple Random Sampling
    Shashi Bhushan, Anoop Kumar, Dushyant Tyagi, Shivam Shukla ….75-83
12. Sample Size Calculation: Regulating Factors and Methods
    Vikas Tyagi …….……………………………………………………………………………….84-90