Estimation of the age of an individual based on times of eruption of permanent teeth

This is a community based study of the times of eruption of permanent teeth to establish the age of an individual. The study is based on dental examination of 1008 subjects in the age group 5-14 years, residing in Tirupati, Andhra Pradesh, India. The median age of eruption was computed based on the concept of "Ex" which is defined as the age at which a specified percentage of individuals show eruption of a given permanent tooth. The median age "E50" was computed by transformation of percentages to probits and plotting a graph between age and probits. E50 was computed graphically corresponding to a probits value of 5.0 or 50%. A mathematical regression equation [Kusri's] was computed for each graph. The age of an individual can be computed based on the E50 value of the permanent tooth which erupted last. The probability of the given individual being above or below the assessed age can be estimated by referring to graph and probit transformation table.     

Assessing the Impact of Leather Industries on Groundwater Quality of Vellore District in South India Using a Geochemical Mixing Model

Abstract

Deterioration of groundwater quality is one of the most critical issues in twenty-first century. The direct relations of water with all the living beings make it an extremely important commodity. Sources of pollution may be of natural or anthropogenic origin. Nowadays anthropogenic sources of pollution are much more than natural sources. India has 1083 tanneries, in which 577 are in Tamil Nadu which accounts for 44% of the total production of India. Vellore district has an indispensable place in the list. Over the 30–40?years groundwater around tanneries has become seriously polluted.     

Variation in the perception of desired qualities of police officers among trainees and senior police officers. Insights into the process and efficacy of police training

Police training is the process of imparting knowledge, skills, and values to police personnel. The study analyses a survey data on the perception of trainees and senior experienced officers regarding desired professional qualities in police officers. There is a high degree of congruence, in the assessment of values which are important for police, among the two groups. There are also differences among the two groups regarding the evaluation of the importance of interpersonal skills and human qualities. The study attempts to explain the similarities and the differences in perception by examining the conservative and innovative nature of police training, and the role of experience in developing an appreciation of human qualities. The study underlines the importance of police training as a mechanism to maintain the stability of operations in the organisation and its pivotal role in bringing about change in the police.     

香港大律师公会主席林孟达致辞

今天各级司法人员，两大法律专业的成员，跟法律界在本地和海外的各方好友，在此齐首共聚一堂，我们正好趁着这个特别的场合，思考过去一年发生的事情和前瞻来年法律界、司法界将面对的挑战。去年，公会执行委员会比往常繁忙。公会就政府关於填补立法会因议员辞职的出缺安排的建议，五次发出声明，也对政府的谘询文件，提交了陈述书回应。     

SIACHEN GLACIER,THE FULCRUM OF THE GREAT GAME: COLONEL ‘BULL’ KUMAR’S PERSPECTIVES

This article, written by Prateek Joshi in close collaboration with Colonel Narender “Bull” Kumar, discusses the development of the conflict over the Siachen Glacier between India and Pakistan. It sets out the Siachen Conflict in the broad framework of the Great Game and explains the crucial role of Colonel Narender “Bull” Kumar's Siachen expeditions in rekindling this old flashpoint in High Asia. Based on Colonel Kumar's two expeditions to the Siachen Glacier region, namely the Teram Kangri expedition in 1978 and the Siachen expedition in 1981, it discusses the perspectives regarding the dispute and its relation to reviving a consciousness of the Great Game. The first perspective discusses Colonel Kumar's expeditions in light of the Indo-Pak conflict as these two visits became the precursor to Operation Meghdoot, following which the Indian Army occupied the Siachen Glacier in 1984. The second perspective discusses a crucial cartographic blank which was filled only after Colonel Kumar's Siachen expedition.     

Identification of the source of ivory idol by DNA analysis

In this study, we describe a forensic case dealing with the identification of the source of the processed ivory object by DNA analysis. Two pieces of Lord Krishna's idols from a shop were confiscated by an investigating agency of the Indian government and forwarded to us to identify the source of its origin. We succeeded in isolating DNA from both processed ivory idols by using the phenol/chloroform DNA extraction method. The extracted DNA was subjected to PCR amplification using an elephant-specific mitochondrial DNA (mtDNA) D-loop marker. DNA sequence analysis of the amplified fragment of mtDNA D-loop region confirmed that the idols were consistent with Asian elephant with 99% similarity.     

Evaluation of two instrumental methods of comparing writing paper

An organization had approved the sample of writing paper, and accordingly the supplier had to execute the supply. The supply received was suspected to be of different quality from approved one. The organization sent the samples for comparison to the Forensic Science Laboratory. Both the approved and supplied samples were compared using Tensile Testing Method with the Material Testing Machine and Fluorescence and spectral analysis using the Video Spectral Comparator (VSC2000). The difference between the mean loads at peak before rupture in the tensile testing mode for the two samples was about 33%. The two samples differed significantly in terms of UV fluorescence, and there was about 5% average difference in the percentage of maximum reflected intensity in the wavelength region of 400-900 nm. It has been observed in this study that these two methods can adequately distinguish paper samples of different origin.     

Determining dental sex dimorphism in South Indians using discriminant function analysis

Dental forensics forms a vital branch of forensic science which deals with proper handling, examination and evaluation of dental evidences for identification of victims of crime, accidents or calamities. Therefore skull and teeth often provide the identification material. The aim of the study was to investigate the accuracy of odontometric methods in sex determination of permanent teeth and to compute new formula to differentiate male and female teeth using discriminant function analysis for South Indian population. A total of 100 subjects were selected for the study from a parent population of 4800 students by simple random sampling method. Alginate impressions of the upper dental arch were made and casts were poured immediately. A digital vernier calliper was used for the measurement of all upper anteriors. Twelve different tooth measurements were recorded and from those two indexes have been computed. Statistical analysis was performed using the SPSS version 17.0 software. All the predictor variables were subjected to stepwise discriminant function analysis which optimally separates the genders and a best discriminant function was generated. In all the observed mean dimensions, male values exceed the female values. Student's 't' test for the different predictor variables of all teeth selected between male and females were found significant (p < 0.05). Very high significance was found in mean MD of 11, 12 and 13 and |c| of 23. The variables exhibiting best discriminant powers were mesiodistal width of both upper central incisors, DB-ML of 13 and canine crown module of 13. Sexual dimorphism in the size of permanent teeth differs from one population to the other and hence the standards set for one population could not be applied for another population. Hence this technique would be a simple, quick, cost effective, reliable and accurate for sex determination.     

STR polymorphism among two tribal populations of India

Two tribal populations of India, Bison Horn Maria and Muria from Bastar district of Madhya Pradesh in Central India were studied for DNA polymorphisms at tetranucleotide short tandem repeat (STR) loci (F13A01 and HUMvWA). A total of 63 random adult individuals for F13A01 locus and 53 samples for HUMvWA were analyzed in the present study.