Effects of textile dyeing effluent on the environment and its treatment: A review

EASL-Vol. 5 (2022), Issue 1, pp. 1 – 17 Open Access Full-Text PDF
Pranay Dutta, Md. Razaya Rabbi, Mohammad Abu Sufian and Shahnaz Mahjebin

Abstract:Wastewater discharged by dye manufacturing and textile finishing industries has become an environmental concern. The textile dyeing plants utilize a variety of synthetic dyes and dump massive amounts of dyeing effluent because the uptake of these dyes by fabrics is very low. The plant’s photosynthetic activity is significantly harmed by this highly colored textile dyeing effluent, impairs aquatic life because of its low light penetration and oxygen consumption. Owing to the presence of heavy metallic materials and chlorine in synthetic dyes, it could also be harmful to some aquatic creatures. Therefore, these textile wastewaters need to be treated before their discharge. Various techniques for dealing with textile dyeing effluent have been discussed in this paper. Treatment techniques presented in this study include oxidation methods, physical methods, and biological methods. Also, the paper is prepared to compile all the updated data on textile dyeing effluents’ characterization and their impact on the environment from various journals and websites and some from personal communication with some factories. Since an extensive range of synthetic dyes, namely, azo dye, vat dye, reactive dye, disperse dye, is widely used in the textile industry, some of the dyeing effluents’ physicochemical parameters surpassed their standard limits. Hence, these days, the proper monitoring and corrective steps such as the elimination process have become the most thoughtful tasks globally, particularly the developing and transition economies. It is crucial to take immediate action to minimize environmental emissions due to the discharge of untreated textile dye waste.

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Association of neck circumference with obstructive sleep apnoea in young adults: A cross sectional study

TCMS-Vol. 2 (2022), Issue 1, pp. 21 – 25 Open Access Full-Text PDF
Sumit Garg, Anjali Verma and Manoj Kumar

Abstract:Prevalence of Obstructive sleep apnoea (OSA) has been increasing owing to increase in its risk factors. The pathophysiology of OSA is related to narrowing or obliteration of upper airway. Neck circumference (NC) is a measure which predicts the neck fat and hence narrowing of airway. Modified Berlin’s Questionnaire is a validated tool to assess the risk of OSA in Indian setting. The present study was designed to determine the association of NC with the risk of OSA in young adults. 1500 subjects of both genders between 18 to 30 years of age were recruited, their NC was measured and they were administered screening questionnaire first. Those who gave one or more positive response were administered modified Berlin questionnaire and risk of OSA was assessed and it was compared with NC. There was a significant increase in risk of OSA in subjects with higher NC with a cut off of 36 cm in males and 32 cm in females. NC is an important anthropometric measurement to predict risk of OSA.

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Evaluation of effect of type 1 tympanoplasty on the quality of life of chronic suppurative otitis media patients

TCMS-Vol. 2 (2022), Issue 1, pp. 16 – 20 Open Access Full-Text PDF
Hari Gupta and Saquib Reyaz Khan

Abstract:Background: The aim of the study is to evaluate effect of type 1 tympanoplasty on the quality of life of CSOM patients.
Materials and Methods: In this observational study, ninety- two patients of chronic suppurative otitis media with perforations of either genders were included. The chronic otitis media-5 (COM-5) questionnaire was administered to all patients. Air bone gap, physical suffering scores, hearing loss score, caregiver’s concern scores, emotional distress score and activity limitation scores were recorded.
Results: Side involved was right in 58 and left in 34. Location of perforation was anterior quadrant in 15, posterior quadrant in 7 and central perforation in 70 cases. Pre- operative physical suffering scores was 3.74 and post- operative score was 2.10, hearing loss score was 3.24 and 1.28, caregiver’s concern scores was 2.34 and 1.12, emotional distress score was 1.92 and 1.04 and activity limitation scores was 1.62 and 1.10 respectively. Pre-op mean air bone gap was 32.2 db and post- op mean air bone gap was 18.4 db. The difference was 13.8 decibels.
Conclusion: Type 1 tympanoplasty is common surgical procedure performed in patients with chronic suppurative otitis media and it found to be effective in improving quality of life in these patients.

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A clinicopathologic investigation study of lichen planus

TCMS-Vol. 2 (2022), Issue 1, pp. 9 – 15 Open Access Full-Text PDF
Mohammed Abidullah, Sana Vakeel, Kavitha Gaddikeri and Abdul Vakeel

Abstract:Aim: A clinicopathologic investigation study of lichen planus.
Methods: This prospective and observational study was carried out in the Department of Oral Pathology & Microbiology, S.B.Patil Dental College \& Hospital, Bidar, Karnataka for a period of 1 year. 90 cases of Lichen Planus (LP) were included in this study. A complete clinical history was obtained, including duration, place of start, symptoms, medication history, and family history. A thorough general checkup, systemic examination, and dermatological examination were performed. The form and location of skin lesions, as well as the existence of any other related disorders, were all documented. Mucosa, hair, nails, palms, soles, and extremities involvement were all noted as concomitantly affected. To assess the histological diagnosis, haematoxylin and eosin stained sections of lesional tissue biopsies were generated. Once the histopathology slide was complete, each slide was attentively examined, and the findings were thoroughly analyzed and appraised.
Results: Out of 90 patients 55(61.11%) were male and 35(38.89%) were female and male to female ration were 1:1.57. Most of the patients belong to 30-40 years of age group (38.89%), followed by 20-30 years (26.67%), below 20 years (22.22%) and 12.22% above 40 years. 45 individuals had LP for less than 5 months before presenting to our out-patient service. The length varied from 5 to 11 months in 22 cases. The duration was longer than 24 months in 15 individuals. The length varied from 11 to 17 months in 5 individuals and from 17 to 24 months in the remaining 3. The classical type was encountered in 51 (56.67 percent) of the 90 Lichen Planus(LP) patients, followed by the hypertrophic type in 23 (25.56 percent) patients, linear LP and lichen planopilaris (LPP) in 4 (4.44 percent) patients each, oral and annular 2(2.22 percent) patients each, and follicular, bullous LP and LP pigmentosus in 1 (1.11 percent) patients each. Of the 90 patients in our research, 40 showed oral signs of LP, and four of them were diagnosed with just oral LP devoid of cutaneous indications of LP. Buccal mucosa was usually implicated in the oral cavity in 30 (75%) patients, lips in 10 (25%) individuals, and tongue in 7 (17.5%) patients. In our study, only two clinical kinds of oral LP were identified: the reticulate type in 35 (87.5 percent) of the subjects and the erosive variation in the other 5 people (12.5 percent ).
Conclusion: The current study sheds light on the clinicopathological behaviour of lichen planus patients according on their gender. Further research in this area will aid in the exploration of this uncharted territory, allowing for faster diagnosis and better treatment. LP was usually noticed in people in their forties and fifties. In our analysis, classical lesions were the most prevalent, followed by hypertrophic and linear types.

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Preperitoneal meshplasty versus lichtenstein’s hernioplasty in patients with inguinal hernia

TCMS-Vol. 2 (2022), Issue 1, pp. 5 – 8 Open Access Full-Text PDF
Sarfaraz Alam Khan

Abstract:Aim: To compare preperitoneal meshplasty and Lichtenstein’s hernioplasty in patients with inguinal hernia.
Methodology: A total of one hundred six cases of inguinal hernia were included in the study. Patients were divided into two groups of 53 each. Group, I patients underwent preperitoneal meshplasty, and group II patients underwent Lichtenstein’s hernioplasty technique of inguinal hernia repair. Parameters such as time taken for surgery early complications were recorded.
Results: Group I had 22 males and 18 females, and group II had 25 males and 15 females. The mean time of surgery in group I was 46.2 minutes, and in group II was 55.2 minutes. An early complication was seroma two each in group I and 1 in group II, wound infection 3 cases in group I and 2 in group II, pain 2 in group I, mesh infection 3 in group I and 1 in group II and testicular atrophy 1 in group I. The difference was significant (P< 0.05).
Conclusion: Both techniques such as preperitoneal meshplasty and Lichtenstein’s hernioplasty were effective in management of inguinal hernia.

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Assessment of outcome of early and delayed repair of bile duct injuries

TCMS-Vol. 2 (2022), Issue 1, pp. 1 – 4 Open Access Full-Text PDF
Harpreet Singh and Arvind Sharma

Abstract:Aim: To compare outcome of early and delayed repair of bile duct injuries.
Methodology: Sixty- four patients with bile duct injuries of either gender were divided into group I (Early repair) and group II (Delayed repair). Operative findings such as injury classification and procedural variables and postoperative course, including 30-day re-admission and 90-day mortality, were recorded.
Results:  Aetiology was cholecystectomy in 25 and 21, abdominal trauma in 7 and 8, and non-biliary abdominal procedures in 2 and 5 groups I and II, respectively. There were 18 males and 14 females and 16 males and 16 females in groups I and II, respectively. Hospital length of stay was 7.1 days in group I and 8.4 days, 30 days of re-admission was seen in 3 and 4, and 90 days of mortality was seen in 2 in group I and 1 in group II. Strasburg-Bismuth classification showed A in 1 and 2, B in 3 and 4, C in 8 and 1, D in 6 and 4, E1 in 4 and 4, E2 in 3 and 5, E3 in 4 and 6, E4 in 3 and 4, E5 in 2 and 3 and X in 0 and 1 in group I and II respectively. Preoperative PTC catheter placement was seen in 0 and 18, and preoperative percutaneous transabdominal drain placement was seen in 0 and 12 in groups I and II, respectively.
Conclusion: Early repair found to be better as compared to delayed repair of bile duct injury.

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A note on binomial transform of the generalized fifth order Jacobsthal numbers

ODAM-Vol. 5 (2022), Issue 1, pp. 1 – 24 Open Access Full-Text PDF
Yüksel Soykan, Erkan Taşdemir and Vedat Irge

Abstract:In this paper, we define the binomial transform of the generalized fifth order Jacobsthal sequence and as special cases, the binomial transform of the fifth order Jacobsthal, fifth order Jacobsthal-Lucas, adjusted fifth order Jacobsthal and modified fifth order Jacobsthal-Lucas sequences will be introduced. We investigate their properties in details.

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From quasilinear structures to population dynamics: Global stability analysis of an uncertain nonlinear delay system with interval approach

OMS-Vol. 6 (2022), Issue 1, pp. 35 – 50 Open Access Full-Text PDF
Sümeyye Çakan

Abstract:In this paper, we analyze a new continuous-time epidemic model including nonlinear delay differential equations by using parameters and functions selected from a class of intervals whose algebraic basis is based on quasilinear spaces. The main idea in the model’s generic structure is based on uncertainties in the values of parameters and functions forming the model. Therefore, using an interval coefficient approach rather than the exact value of parameters and functions that define transmissions between the compartments in the population dynamics will better represent the reality. Furthermore, preferring such an approach provides more realistic scenarios for temporal and stability dynamics of a population exposed to a disease. In this study, the quasilinear space is defined to explain the mathematical background of the interval approach in the fictional chain of the model. Next, descriptions belonging to the introduced model are included. After this compartmental system is presented as two systems formed by the lower and upper endpoints of the intervals determining parameters and functions, local and global dynamics related to stabilities of the models are analyzed separately for each. Then, using some interval analysis and functional analysis methods, these results are combined, and a conclusion about the stability of the proposed epidemic model has been reached. Alongside, the performance of the proposed approach is demonstrated by a visual simulation.

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On the inverse sum indeg index (\(ISI\)), spectral radius of \(ISI\) matrix and \(ISI\) energy

OMS-Vol. 6 (2022), Issue 1, pp. 25 – 34 Open Access Full-Text PDF
Özge Çolakoğlu Havare

Abstract:The inverse sum indeg index \(ISI(G)\) of a graph is equal to the sum over all edges \(uv\in E(G)\) of weights \(\frac{d_{u}d_{v}}{d_{u}+d_{v}}\). This paper presents the relation between the inverse sum indeg index and the chromatic number. The bounds for the spectral radius of the inverse sum indeg matrix and the inverse sum indeg energy are obtained. Additionally, the Nordhaus-Gaddum-type results for the inverse sum indeg index, the inverse sum indeg energy and the spectral radius of the inverse sum index matrix are given.

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Steady-state solutions for modified Stokes’ second problem of Maxwell fluids with power-law dependence of viscosity on the pressure

OMS-Vol. 6 (2022), Issue 1, pp. 14 – 24 Open Access Full-Text PDF
Constantin Fetecau and Dumitru Vieru

Abstract:Analytical expressions for the steady-state solutions of modified Stokes’ second problem of a class of incompressible Maxwell fluids with power-law dependence of viscosity on the pressure are determined when the gravity effects are considered. Fluid motion is generated by a flat plate that oscillates in its plane. We discuss similar solutions for the simple Couette flow of the same fluids. Obtained results can be used by the experimentalists who want to know the required time to reach the steady or permanent state. Furthermore, we discuss the accuracy of results by graphical comparisons between the solutions corresponding to the motion due to cosine oscillations of the plate and simple Couette flow. Similar solutions for incompressible Newtonian fluids with power-law dependence of viscosity on the pressure performing the same motions and some known solutions from the literature are obtained as limiting cases of the present results. The influence of pertinent parameters on fluid motion is graphically underlined and discussed.

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