Lanthanum ion doped nano TiO2 encapsulated in zeozyme and impregnated in a polystyrene film as a photocatalyst for the degradation of diuron in an aquatic ecosystem

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 110970-110975 ◽  
Author(s):  
B. R. Saranya ◽  
V. Sathiyanarayanan ◽  
S. T. Maheswari

The occurrence of chlorinated herbicide diuron in water bodies is considered serious pollution and a major health hazard to flora, fauna and mankind.

2021 ◽  
Vol 10 (01) ◽  
pp. 11-16
Author(s):  
Mohd Abid ◽  

The scope of Unani medicine is increasing day by day as people are becoming more interested in herbal and organic world. However, Unani (herbal) knowledge needs to be coupled with scientific documented research done to verify its efficacy. The aim of this paper is to provide updated knowledge on hypertension and its management in the Unani system of medicine. Hypertension is a major health hazard globally especially in developed countries. In the Unani system of medicine, there are mudirrat (diuretics) to reduce body fluids and minerals, and musakkin (relaxants) and munawwim (sedatives) are also advised by Unani physicians to reduce anxiety. Unani physician, Razi recommends venesection for this particular ailment. Unani physicians have given the concept of hypertension as “Imtila-ba-Hasb-ul-Auiya” and have said that this occurs due to sue-e-mizaj damwi and comes under the heading of Imtila. Literally ‘Imtala’ means gathering and fullness of the body with madda (fluids). To be precise, it means there is a buildup of normal or abnormal fluids in the body. Unani physicians were all aware of the concept of Zaghta e damwi (blood pressure). Systole as ‘Zaghta-e-Inqabazi’ and diastole as ‘Zaghta-e-Inbesati’ is well depicted in the Unani literature. Most of the world’s population, mainly in developing countries, use herbal medicines for primary health care because of their ancient tradition, culture, and minor side effects. Various kinds of research have been conducted regarding the hypotensive and antihypertensive therapeutic values of local medicinal plants in the recent past, and they have provided evidence for the antihypertensive effects of some of these plants.


Author(s):  
Swaha Satpathy ◽  
Arjun Patra ◽  
Bharti Ahirwar

AbstractPostmenopausal osteoporosis, a silent epidemic, has become a major health hazard, afflicting about 50% of postmenopausal women worldwide and is thought to be a disease with one of the highest incidences in senile people. It is a chronic, progressive condition associated with micro-architectural deterioration of bone tissue that results in low bone mass, decreased bone strength that predisposes to an increased risk of fracture. Women are more likely to develop osteoporosis than men due to reduction in estrogen during menopause which leads to decline in bone formation and increase in bone resorption activity. Estrogen is able to suppress the production of proinflammatory cytokines like interleukin (IL)-1, IL-6, IL-7 and tumor necrosis factor (TNF-α). This is why these cytokines are elevated in postmenopausal women. In this review article we have made an attempt to collate the various methods and parameters most frequently used for screening of antiosteoporotic activity in postmenopausal osteoporosis. Pertaining to ovariectomized animal model, this is the most appropriate model for studying the efficacy of different drugs to prevent bone loss in postmenopausal osteoporosis.


2021 ◽  
Vol 51 (3) ◽  
pp. 295-298
Author(s):  
Aaron Demers ◽  
◽  
Shane Martin ◽  
Emil P Kartalov ◽  
◽  
...  

Heat loss is a major health hazard for divers. It can lead to hypothermia, organ damage, unconsciousness, and eventually death. Hence, thermal protection is essential for diver safety. Typically, protection is provided by wetsuits made of bubbled neoprene. However, neoprene shrinks with depth and loses thermal insulation capability, while thick neoprene suits make swimming exhausting. Herein, a proof-of-concept is presented for a solution to both problems: a ‘K-suit’ made of thermally-resistive composite segments attached to a thin neoprene suit. The segments are made of hollow glass microspheres embedded in carrier polymer thermally cured in 3D-printed molds based on 3D-scans of the diver’s body. The K-suit was compared in field trials with a 7 mm commercial neoprene suit by diving in pairs, while automated dataloggers registered pressure and temperature inside and outside both suits. The K-suit demonstrated +4ºC higher temperature difference than the 7 mm neoprene. Also, divers reported that the K-suit had the ergonomics of a 3 mm neoprene suit. These preliminary results represent a proof-of-concept for the K-suit and promise further improvements with potential impact on diver safety.


2020 ◽  
Vol 20 (5) ◽  
pp. 1219-1232 ◽  
Author(s):  
Luca Locatelli ◽  
Beniamino Russo ◽  
Alejandro Acero Oliete ◽  
Juan Carlos Sánchez Catalán ◽  
Eduardo Martínez-Gomariz ◽  
...  

Abstract. Combined sewer overflows (CSOs) affect bathing water quality of receiving water bodies by bacterial pollution. The aim of this study is to assess the health hazard of bathing waters affected by CSOs. This is useful for bathing water managers, for risk assessment purposes, and for further impact and economic assessments. Pollutant hazard was evaluated based on two novel indicators proposed in this study: the mean duration of insufficient bathing water quality (1) over a period of time (i.e., several years) and (2) after single CSO/rain events. In particular, a novel correlation between the duration of seawater pollution and the event rainfall volume was developed. Pollutant hazard was assessed through a coupled urban drainage and seawater quality model that was developed, calibrated and validated based on local observations. Furthermore, hazard assessment was based on a novel statistical analysis of continuous simulations over a 9-year period using the coupled model. Finally, a validation of the estimated hazard is also shown. The health hazard was evaluated for the case study of Badalona (Spain) even though the methodology presented can be considered generally applicable to other urban areas and related receiving bathing water bodies. The case study presented is part of the EU-funded H2020 project BINGO (Bringing INnovation to OnGOing water management – a better future under climate change).


2016 ◽  
pp. 355-376
Author(s):  
Abbas Mahdi ◽  
Ayushi Jain ◽  
Maheep Bhatnagar ◽  
Rekha Bhatnagar

2019 ◽  
Vol 10 ◽  
Author(s):  
Junfeng (Jim) Zhang ◽  
Yongjie Wei ◽  
Zhangfu Fang

2020 ◽  
Vol 163 ◽  
pp. 03002
Author(s):  
Vasiliy Dmitriev ◽  
Svetlana Sedova ◽  
Anastasiia Plenkina ◽  
Viktoriia Khomiakova ◽  
Diana Avdeevich ◽  
...  

By the example of the Suuri Lake (0.37 km2) situated in the North-Western Ladoga region, modern aspects of monitoring the ecological state of water bodies are generalized, including 1) assessment of the rates of mass transfer processes in water ecosystems and the factors affecting them; 2) assessment of the integrated properties of water bodies and their ecosystems based on hierarchical schemes summarizing information about the state of subsystems and their properties in the form of composite indices. The results of the study in 2019 are visualized. Quantitative estimates of the chemical and biological composition and physical properties of the aquatic ecosystem, mass transfer rates, factors influencing them are obtained; the values of the integral indicators for the subsystem and their properties (productivity, water quality, stability) and the integral indicators of the systems and their integrative properties as a whole (ecological status, ecological wellbeing) are estimated. The temporal dynamics of the processes, component composition and complex properties of the aquatic ecosystem are investigated.


1964 ◽  
Vol 14 (5) ◽  
pp. 225-225
Author(s):  
W. G. Scott
Keyword(s):  

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