The present study describes the use of an aqueous solution containing a blend of hydrotropic solubilizing agents (mixed hydrotropic substance’s solution) as a successful solvent system utilizing the concept of mixed hydrotropy for spectrophotometric analytical estimation of various conventional formulations as well as novel drug delivery systems. Frusemide, a poorly water-soluble drug, was estimated by application of mixed hydrotropic solubilization method. There was more than 15-fold enhancement in aqueous solubility of frusemide in a solution of blend of hydrotropic agents which consisted of 30% urea, 13.6% sodium acetate and 11.8% sodium citrate. This solvent mixture was employed to solubilize the drug from the fine powder of tablet formulations as well as the niosomes of frusemide. The selected λmax for spectrophotometric estimation was 333 nm. The hydrotropic agents used in the analysis and additives used in the manufacture of tablets and preparation of niosomes did not interfere in the analysis. Statistical data proved the accuracy, reproducibility and precision of the proposed method. The results suggested that proposed method is new, rapid, simple, accurate, and reproducible as well as employed aqueous solvent instead of organic solvents in estimation of drug from the dosage forms.

Archana mehrotra

Introduction: Mental illness is a global issue that affects various population groups, including university students. Gaining insights into students' perspectives on mental illness plays a vital role in fostering mental health awareness and combating stigma in educational environments Purpose: The present study aimed to investigate Vietnamese undergraduate students’ knowledge, perceptions, and attitudes of mental illness by focusing on the dimensions: (i) the level of knowledge students possess about the causes and manifestations of mental illness, and (ii) their attitudes towards individuals experiencing mental health problems. Methodology: Using a descriptive cross-sectional design, this study involved 350 undergraduate students from five universities in Ho Chi Minh City, Vietnam. Data collection was conducted between June and July 2024 and utilized the Perception Towards Persons with Mental Illness (PWMI) Scale adapted from previous studies. Data analysis was performed using the Statistical Package for Social Science software, version 25 (IBM SPSS, Chicago, IL, USA). Results: The results indicated that approximately 80.6% knew about mental illness, and 70.5% perceived mental illness as a common or quite common phenomenon in Vietnam. Regarding the etiology of mental illness, a significant majority identified "bad things happening to you" as a cause (73.3%), followed by substance abuse (51.4%) and brain disease (50.0%). The findings also revealed that, despite some positive perceptions and attitudes, many responses clustered around the neutral option, particularly for controversial or personal items. Conclusions: The findings of this study underscore the need for targeted educational interventions to foster more informed and compassionate attitudes towards individuals with mental illness among undergraduate students.

Le minh tien

India’s economic system has undergone significant changes in recent years reflecting globalization and changes in national policies. This paper provides a comprehensive analysis of India’s economic growth, focusing on imports and exports. The study explores the key drivers of economic expansion, including trade liberalization, trade agreements, and technological advancement. It also explores the impact of international trade and geopolitical events on business models. It assesses the role of policy measures such as the Goods and Services Tax (GST), the Make in India initiative, and various free trade agreements in generating economic benefits. The paper also assesses the trade balance and its impact on India’s economic stability and growth. The paper concludes with recommendations for improving the market, including diversifying entrepreneurs, investing in infrastructure, and strengthening the domestic economy. The review provides insights to policymakers, businesses, and academics who want to understand and harness India’s economic potential in the global economy

Dr gedam kamalakar

Introduction: Traumatic brain injury is caused by an external physical force which may result in altered level of consciousness with or without impairment of cognitive and physical functions in individuals. It is neither congenital nor degenerative in nature. The impairments can be permanent with partial or total functional disabilities or psychosocial maladjustment. The Intensive rehabilitation with multiple health disciplinary teams can improve a certain extent of physical and cognitive aspects of brain injury patients. Case Report: In this case report we are presenting a 19 year old boy diagnosed as diffuse axonal injury with Glasgow coma scale (GCS ) Score of 4/15 (E1M2V1) at the time of incident has come to our department after 8 months with no head control, no cognitive and no voluntary attempts to do functional activity. The main objective of management is to improve mobility, communication, perception and cognitive functions with minimum period of time by working as a health team. Conclusion: After 14 months post incident with intense rehabilitation of six months his GCS score is improved with scoring of 13/15 (E4M6V3). The improvement seen may be partly attributed to the coordinated work of the team members who meet in the case conference every two weeks to review & revise the treatment protocol. Such that common and individual goals are shared and total therapy time is managed, to incorporate all goals by team members

Nagarjuna narayanasetti

Freeze desalination (FD) is a method in which saline water is cooled below its freezing point and freshwater is separated from the brine in the form of ice crystals. FD is relatively insensitive to the salinity of the feed solution, making it suitable for desalination of high concentration brines such as the brine rejected from the seawater desalination plants. The design of the FD system and the thermochemical behavior of the brine upon freezing are critical factors in the energy performance of this method. To date, thermochemical properties of the concentrated seawater during cooling, such as the threshold of formation of ice and salt-hydrates and their corresponding cooling load of formation, are not well known. Likewise, the optimal configuration of the FD system to achieve the maximum energy efficiency has not been investigated. This work provides comprehensive data about the cooling load of freezing of concentrated brine rejected from seawater desalination plants along with the threshold of formation of ice and salt-hydrates backed-up by validation. Furthermore, the optimal configuration of the FD system is identified and the effects of the compressor isentropic efficiency and effectiveness of the system’s heat exchangers on the work consumption of the FD system were investigated.

Aly elhefny

Verbesina encelioides, a plant with a rich history in traditional medicine, is commonly known as golden crownbeard or cowpen daisy. Despite its widespread use, scientific validation of its therapeutic potential, particularly its analgesic and anti-inflammatory effects, remains limited. Our study is designed to comprehensively evaluate the analgesic and anti-inflammatory effects of methanol extracts from various parts (leaves, stems, flowers, and roots) of V. encelioides in animal models. Acute toxicity, antinociceptive effects (heat plate and tail flick tests), and anti-inflammatory activity (carrageenan-induced inflammation) were tested in Swiss albino mice and Wistar albino rats. The acute toxicity assay showed no adverse effects in mice up to 1000 mg/kg, a highly encouraging result. In analgesic studies, V. encelioides extracts showed dose-dependent increases in reaction times similar to aspirin. Different extracts had different effects on paw edema in anti-inflammatory testing; some at first increased inflammation but eventually showed significant decreases, especially at higher dosages. These results offer a positive perspective on V. encelioides' possible medicinal use. These results provide a positive perspective on Verbesina encelioides' possible therapeutic use. The results imply that extracts from the plant, which are abundant in bioactive substances such as flavonoids, phenolics, and alkaloids, may have applications in treating pain and inflammation. These results highlight the plant's medicinal potential and suggest that more research and development could help address pain and inflammation naturally.

Dr. salman ahmed

This is a study on the growth of public relations in Malaysia based on the advertisements placed in the newspapers during the colonial period. Tracing the historical development serves to make a better understanding about the nature of public relations practice. This paper therefore aims at exploring the development of the public relations profession by studying the advertisements placed in the nationwide newspapers, the Straits Times and the Singapore Free Press & Mercantile Advertiser from 1939 which included the early advertisement that contained the phrase “public relations” to 1956 a year before the independence of the Federation of Malaysia. An analysis of the advertisements was made to fully understand the historical development of public relations in Malaya or then Malaysia. The very first advertisement that was identified was on 31 January 1948, which was placed by the Department of Public Relations of the federal government. The British colonial government had placed another four advertisements in 1949 and 1950. A British mining Co. was the first corporation to hire an information & public relations officer in 1956. The results showed some differences and similarities through the analyses of advertisements in the job specification, which included qualification, duties, and salaries. The results revealed that those who had higher education and experience obtained a higher salary. The results also showed that some advertisers companies/ organizations had substituted academic qualifications for working experience) when advertising for their public relations personnel.

Mohammed fadel arandas

This study was conducted to optimize the integration of solar-photovoltaic-distributed energy resources (SPVDERs) within the Nigerian power system networks using an AI-based Particle Swarm Optimization (PSO) Algorithm. By employing a mixed research method, primary and secondary data were gathered to calculate flow analysis, NR method's equations, PSO's position update model, particle swarm optimizer algorithm, and application modeling including Solar-PV DER modeling. The AI-based PSO algorithm design was developed for optimizing SPV-DER integration in Nigerian power system networks, and key parameters and variables that needed consideration were identified. The study also established how the performance of the AI-based PSO algorithm could be evaluated and compared with other optimization techniques for SPV-DER integration within Nigerian power system networks. The study's results showed that voltage limits were within acceptable ranges, and solar power contributions were estimated at 880.10MW with 46,718 panels needed. The study concluded and recommended that investing in AI-powered tools for efficient power distribution; monitoring and resource optimization for sustainable energy sources would optimize performance and unleash Nigeria's sustainable energy potential.

Fxintegrity publishing

OpenCitations is an infrastructure organization for open scholarship dedicated to the publication of open citation data as Linked Open Data using Semantic Web technologies, thereby providing a disruptive alternative to traditional proprietary citation indexes. Open citation data are valuable for bibliometric analysis, increasing the reproducibility of large-scale analyses by enabling publication of the source data. Following brief introductions to the development and benefits of open scholarship and to Semantic Web technologies, this paper describes OpenCitations and its data sets, tools, services, and activities. These include the OpenCitations Data Model; the SPAR (Semantic Publishing and Referencing) Ontologies; OpenCitations’ open software of generic applicability for searching, browsing, and providing REST APIs over resource description framework (RDF) triplestores; Open Citation Identifiers (OCIs) and the OpenCitations OCI Resolution Service; the OpenCitations Corpus (OCC), a database of open downloadable bibliographic and citation data made available in RDF under a Creative Commons public domain dedication; and the OpenCitations Indexes of open citation data, of which the first and largest is COCI, the OpenCitations Index of Crossref Open DOI-to-DOI Citations, which currently contains over 624 million bibliographic citations and is receiving considerable usage by the scholarly community.

Kamal singh

Biological information processing networks rely on allosteric protein switches that dynamically interconvert biological signals. Construction of their artificial analogues is a central goal of synthetic biology and bioengineering. Receptor domain insertion is one of the leading methods for constructing chimeric protein switches. Here we present an in vitro expression-based platform for the analysis of chimeric protein libraries for which traditional cell survival or cytometric high throughput assays are not applicable. We utilise this platform to screen a focused library of chimeras between PQQ-glucose dehydrogenase and calmodulin. Using this approach, we identified 50 chimeras (approximately 23% of the library) that were activated by calmodulin-binding peptides. We analysed performance parameters of the active chimeras and demonstrated that their dynamic range and response times are anticorrelated, pointing to the existence of an inherent thermodynamic trade-off. We show that the structure of the ligand peptide affects both the response and activation kinetics of the biosensors suggesting that the structure of a ligand:receptor complex can influence the chimera's activation pathway. In order to understand the extent of structural changes in the reporter protein induced by the receptor domains, we have analysed one of the chimeric molecules by CD spectroscopy and hydrogen-deuterium exchange mass spectrometry. We concluded that subtle ligand-induced changes in the receptor domain propagated into the GDH domain and affected residues important for substrate and cofactor binding. Finally, we used one of the identified chimeras to construct a two-component rapamycin biosensor and demonstrated that core switch optimisation translated into improved biosensor performance.

Cagla ergun ayva

Urolithiasis is a common worldwide problem with high recurrence. This review covers Euphorbiaceae twenty (20), Cucurbitaceae eighteen (18), Acanthaceae and Amaranthaceae fifteen (15), Cupressaceae twelve (12), Caryophyllaceae eleven (11), Anacardiaceae ten (10), Amaryllidaceae, Apocynaceae and Asparagaceae nine (09), Ericaceae and Equisetaceae eight (08), Arecaceae and Caesalpiniaceae seven (07), Chenopodiaceae six (06), Aspleniaceae, Capparidaceae and Crassulaceae five (05) plants used globally in different countries. Hopefully, this review will not only be useful for the general public but also attract the scientific world for antiurolithiatic drug discovery.

Dr. salman ahmed

Diabetes mellitus is a common and chronic metabolic disorder. Uncontrolled diabetes mellitus leads to body organ damage if not treated properly. Educational intervention is necessary from health-care providers such as pharmacists to prevent or reduce organ damage and complications among the diabetic patients. Several studies have demonstrated the contribution of pharmacists in achieving a better control of diabetes mellitus. Thus, this study intended to assess the knowledge and practice regarding foot care among Libyan diabetic patients in Al-Bayda city. In addition, to determine the association between knowledge and practice regarding diabetic foot care with selected demographic variables. This is a cross sectional study conducted at Diabetes Center Aljabal Al akhdar in Al-Bayda between April and August, 2022. A total of 400 participants with diabetes were enrolled and interviewed by using a self-design questionnaire for knowledge and practice of foot care after taking verbal agreement. Data was analyzed by using SPSS software version 26.0. In this study, 191 subjects were male (47.8%) and 209 subjects (52.3%) were female. On the topic of foot care, 51.8% of the participants stated they did know how to perform correct foot hygiene and 33.5% stated that drying should consist of passing a towel between their toes. Female subjects statistically had more knowledge than male subjects on the right footwear and correct way of nail cutting (p < 0.01 and p < 0.001, respectively). In relation to practice, the frequency of patients with a good practice was 126 (31.5%) and with poor practice was 274 (68.5%). Evaluating the parameters dry, moisturize and nail cutting, women showed a significant difference in relation to men, with a high significance level in the three parameters. In conclusion, the knowledge and practice of foot care in Libyan patients with diabetes were poor. So, an educational program is recommended to improve the awareness of foot care. Diabetic patients should be provided information about self-care of their feet by health care providers such as pharmacists to prevent and delay onset of foot complications and improve the quality of life.

Mediterranean journal of pharmacy and pharmaceutical sciences

Background: The deliberate postponement of significant academic assignments with due dates is known as academic procrastination. The undesirable habit known as procrastination is the inability to start or finish a task within the allotted time, which results in detrimental effects on students' future employment, as well as stress, guilt, poor academic achievement, and low self-esteem. Method: Descriptive Research design was adopted for a study to assess the Variables influencing Nursing students' Academic Procrastination at selected Nursing college of Bhopal, M.P. Sample size 60 B.Sc. Nursing students. Result: Result revealed that majority of students were females, 27 out of 60 were in age group of 20-21yeras, 25 (41.6%) were studying in B.Sc. N 3rd year. Most of students resided in Rural area (36), 54 out of 60 belong to nuclear family and 35 mothers of students were educated as compared to 51 fathers. The mean score and SD of influencing variables of academic procrastination were as follows Personal variable was 2.6 ± 0.48, Environmental 2.26 ± 0.71, and Academic was 1.78 ± 0.41. Majority of nursing students 39 (65%) were moderately affected by Personal variables, Environmental variables affected 23 (38%) students moderately and academic variables affected 17 (28%) students moderately. Only Personal factor had more effect on 5 students as compared to none in other two variables. Conclusion: The study concluded that Environmental and personal factor had more effect on Academic procrastination as compared to academic variables.

Dr k c yadav

Vitamin C is associated with history of the cause of the ancient hemorrhagic disease scurvy. Vitamin C is an essential nutrient with important antioxidant properties. It is required by the body for normal physiological function. The body cannot synthesize vitamin C, it is present in nature through foods and other natural sources and it exists as a nutritional food supplement. The antioxidant activity of vitamin C protects the body from free radical damage. Vitamin C is essential for the development and maintenance of connective tissues. It is used as therapeutic agent in many diseases and disorders. Vitamin C plays an important role in several metabolic functions, as the conversion of the amino acid, tryptophan, to the neurotransmitter, serotonin, and the conversion of cholesterol to bile acids. Vitamin C supplementation resulted in a significant increase in vitamin C levels in populations; its high intake is associated with positive effects on cardiovascular risk factors. Vitamin C protects the immune system, reduces the severity of allergic reactions and helps to fight infections. It has an important role in bone formation, wound healing and the maintenance of healthy gums. There is profound beneficial effect of vitamin C in respect to human diseases as cancer, atherosclerosis, diabetes, neurodegenerative disease and many metal toxicities. Several vitamin C analogs have been produced as anticancer and antioxidant activity. Vitamin C is useful if it is used as adjuvant therapy for several chronic diseases. Thus, this review summarizes the importance of vitamin C in the body’s physiology and biochemistry, in addition, the different mechanisms that vitamin C is implicated to treat different acute and chronic diseases. Future exploration should pay attention to chronic disease management by vitamin C.

Mediterranean journal of pharmacy and pharmaceutical sciences

Impurity is something that is impure or makes something else impure. An impure substance may be defined as follows: a substance of interest mixed or impregnated with an extraneous or usually inferior substance, from the standpoint of its usage, the drug substance is compromised in terms of purity even if it contains another material with superior pharmacological or toxicological properties. The impurity may be developed either during formulation, or upon aging of both API’s and formulated API’s in medicines. The presence of these unwanted chemicals, even in small amount, may influence the efficacy and safety of the pharmaceutical products. The impurities are not necessarily always inferior. Highly sophisticated instrumentation, such as mass spectra meters attached to a Gas Chromatography or HPLC, are inevitable tools in the identification of minor components (drugs, impurities, degradation products, metabolites) in various matrices. Present article reveals different impurities found in the API’s, methods for identifying them and the possible measures to deal with the interferences caused by them in pharmaceutical analysis.

Prasanna pradhan

A zoonotic disease is an infectious disease caused by pathogens such as bacteria, virus, rickettsia, fungi, parasite or prion that has been transmitted from an animal, especially a vertebrate to human beings. Usually, the first infected human transmits the infectious agent to other humans very rapidly; it is one of the important concerns of zoonoses. The World Health Organization (WHO) currently list the Emerging infectious diseases (EID) of epidemic issues in their research and development blueprint as COVID-19 (Corona viruses), Middle East Respiratory Syndrome (MERS), Severe Acute Respiratory Syndrome (SARS), Ebola and Marburg viruses (Filovirus), Crimean Congo haemorrhagic fever (Nairo virus), Lassa Fever (Lassa virus), Nipah (Henipa virus ), Rift Valley fever (Phlebo virus) and Zika (Flavi virus). Due to the deadly pandemics facing by the globe, it is essential to understand the way of transmission of emerging viruses, its mode of infection and important measures to eliminate or control them from the world is essential. However, mankind overcomes so many deadly viruses with the help of scientific knowledge, through vaccination, new therapies, drugs etc. Nowadays, viral zoonoses like rabies (Lyssa virus) are 100% preventable through vaccination and medication even though, humans face lots of new threats especially emerging zoonosis diseases like Covid19. This review summarized the major zoonotic viruses affecting human beings, their source, pathogenicity and its important ways to overcome the transmission of microbes from animal to humankind.

Dr. saranya devi k

Venous thromboembolism (VTE) is a serious medical condition that has a high clinical burden on both the mother and fetus, despite having a low incidence during pregnancy and the postpartum period. VTE is a leading cause of death among pregnant women and new mothers worldwide, and its severity cannot be underestimated. The development of VTE is influenced by a combination of genetic and environmental factors, as well as acquired conditions. Pregnancy-related changes, such as increased levels of coagulation factors and diminished fibrinolysis, can increase the risk of VTE. Additionally, older mothers, those who are obese, multiparous, or have undergone cesarean delivery, are at a higher risk of developing VTE. Owing to the lack of standardized guidelines and reliable data on VTE prevention, diagnosis, and treatment, authorities have developed risk scores that allow for a personalized assessment of the risk of thrombosis during pregnancy and postpartum, enabling a tailored approach to prevent thrombosis. Managing VTE during pregnancy poses significant challenges because the benefits and risks of anticoagulant treatment for both the mother and fetus must be carefully balanced. An interdisciplinary approach that includes obstetricians, neonatologists, physicians, and hematologists is essential to achieving optimal outcomes. This review explored the VTE updates in pathogenesis, presentation, complications, treatment options, and research gaps with proposal strategies to improve VTE outcomes and suggest further research.

Karishma

The purpose of the study was explored to find out the land and aquatic plyometric training on vital capacity among college men athletes. For the purpose of the study, forty five (n=45) men college athletes from Pudukkottai, Tamilnadu, India during the year 2019-2020 were selected as subjects. Their ages were from 18 to 21 years. The selected participants were divided at random into three groups of fifteen each (n=15). Group-I underwent land plyometric training, group-II aquatic plyometric training, and group-II acted as control group. The duration of the training period was restricted to eight weeks and the number of sessions per week was confined to five. The selected variable vital capacity was assessed by wet spirometer. The data were collected prior to and immediately after the training period of twelve weeks. The data obtained from the experimental groups before and after the experimental period were statistically analyzed with analysis of covariance (ANCOVA). Whenever the ‘f’ ratio for adjusted post test means was found to be significant, the scheffe’s post hoc test was applied to determine the paired mean differences. The level of confidence was fixed at 0.05 level for all the cases. The results of the study showed that aquatic plyometric training group is better than land plyometric training group and control group on improving vital capacity.

Dr.i. john parthiban

Technology is very important in this day and age. There are so many fields that use technology, one of which is in the field of education. Even though Indonesia is still in a situation of the Covid-19 pandemic, education must remain number one by maximizing technology, especially in the field of communication. In this study discussed the role of technology during the distance learning process, especially for students at the SD / MI level. The formulation of the problems in this study are (1) How is the distance learning process using educational technology media for SD / MI students during the Covid-19 pandemic?; (2) What are the problems that occur in the distance learning process using educational technology media for SD / MI students during the Covid-19 pandemic?; (3) What is the solution to problems in the distance learning process by using educational technology media for SD / MI students during the Covid-19 pandemic? While the method used to answer the formulation of the problem is qualitative research with an analytic description approach, interviews and literature study, the focus of which is the role of technology and educational media for students at the SD / MI level during the Covid-19 pandemic. The results showed that the distance learning process was carried out using Zoom Cloud Meeting media, WhatsApp group and Google Classroom. The problem that occurs during the distance learning process is usually a signal problem that is not good and sometimes students feel bored when doing online learning so they are playing, lying down, and eating snacks. The solution that the teacher takes to overcome this problem is to provide weekend projects on Saturdays and Sundays. Tehnologi merupakan hal yang sangat penting di masa sekarang ini. Banyak sekali bidang yang memanfaatkan teknologi, salah satunya di bidang pendidikan. Meskipun Indonesia masih berada dalam situasi pandemi Covid-19, namun pendidikan harus tetap di nomor satukan dengan memaksimalkan teknologi khususnya bidang komunikasi. Di dalam penelitian ini dibahas mengenai peran teknologi selama proses pembelajaran jarak jauh terutama bagi peserta didik pada tingkat SD/ MI. Rumusan masalah dalam penelitian ini yaitu (1) Bagaimana proses pembelajaran jarak jauh dengan menggunakan media teknologi pendidikan bagi Siswa SD/MI di Masa pandemi Covid-19?; (2) Apa saja permasalah-permasalahan yang terjadi dalam proses pembelajaran jarak jauh dengan menggunakan media teknologi pendidikan bagi Siswa SD/MI di Masa pandemi Covid-19?; (3) Bagaimana solusi permasalahan dalam proses pembelajaran jarak jauh dengan menggunakan media teknologi pendidikan bagi Siswa SD/MI di Masa pandemi Covid-19? Metode Penelitian yang digunakan adalah penelitian Kualitatif dengan pendekatan deskripsi analitik, wawancara dan studi literatur kepustakaan. Hasil penelitian ini menunjukkan (1) proses pembelajaran jarak jauh dilakukan dengan menggunakan media Zoom Cloud Meeting, Whatsapp grup dan Google Classroom. (2) Permasalahan yang terjadi pada saat proses pembelajaran jarak jauh adalah adanya kendala sinyal yang kurang bagus dan terkadang siswa merasa bosan ketika sedang melakukan pembelajaran daring sehingga mereka sambil bermain, tiduran, dan memakan cemilan. (3) Solusi yang dilakukan oleh guru untuk mengatasi permasalahan tersebut adalah dengan memberi weekend project di hari Sabtu dan Ahad.

Educare: journal of primary education

Concrete is a material which is used in construction. Weight of concrete plays a major role in the construction industry. If the weight of the concrete is increased, it will pose more structural problems on the later date of construction. It also increases the cost of construction, without any specific benefit. So if lightweight concrete is used, it not only reduces cost of construction, but also not poses any structural problems unnecessarily. Light weight concrete also aids workers in smooth handling of materials. In this study, vermiculite in the form of exfoliated form is used to replace partially natural sand. By this action dead weight of the structure is reduced. Once the dead weight of structure is reduced, it in turn reduces cost of construction. In this study three mixes were casted with the cement content of 383 kg/m3 in M20 concrete and the water cement ratio of 0.45 is chosen. Vermiculite at 10%, 20% and 30% are choosing to partially replace the natural sand. The Tests conducted on concrete for evaluating mechanical properties include compressive strength and split tensile strength. For evaluating durability properties, tests like acid resistance, sulphate resistance, chlorine penetration and water absorption.

Kiran kumar narasimhan