evidence showing similar craniopharyngioma and ada the jaw. I am delighted that a fifi appeared. It will remain the on the pathology of tumours system for some time yet. increased considerably in ti result it is now not so comfor and only reads with ease towards the centre of the bx truly a reference book r, \"readers\" book. ities between Congress held in Budapest during Lmantinoma of almost exclusively devoted to s steroid metabolism, their receptors th edition has effects on experimental mammary standard work and advanced human breast can of the nervous mention is made ofsome growth fa The book has main thrust of the book is to hickness; as a possible therapeutic implications. table to handle this reflects the intended readershil when opened As an outsider to this particuk ook. It is now breast cancer studies, I found 1 ather than a unsatisfactory. This was not becai presentations, which in themselves WR TIMPERLEY and well illustrated. The main de] overall lack of orientation and linkage. The briefdiscussion at the book helps no further. I suspect Practical Medical Microbiology. 13th ed. Ed JG Collee, JP Duguid, AG Fraser, BP Marmion (Pp 918; £29.50.) Churchill Livingstone. 1989. ISBN 0443-02323-8.

https://jcp.bmj.com/content/jclinpath/42/12/1315.1.full.pdf

Practical Medical Microbiology

Modern seafood processing practices result in amassment of a large volume of waste products, i.e., skin, head, tails, shells, scales, backbones, etc. These waste products may often encompass several high-value products which are still untapped due to the dearth of appropriate management. Moreover, inadequate disposal of waste also has negative implications on both environment and human health. This seafood waste often contains a huge amount of chitin, a polysaccharide that exhibits exceptional inherent characteristics including biocompatibility, biodegradability, antimicrobial, antitumor and antioxidant activities. The present review summarizes the existing methods for recovery of chitin and its derivatives from marine waste. The preparation of chitin nanoparticles was discussed along with blending of chitin and chitosan with other biopolymers. The recent trends of the application of chitin and chitosan nanostructures in various sectors were explored. This review is an attempt to highlight the extraction methods of chitin and chitosan from marine waste resources and its transformation into valuable commercial products as a solution to waste management.

/pdf/seafood-waste-a-source-for-preparation-of-commercially-zj5mv8vwkv.pdf

Seafood waste: a source for preparation of commercially employable chitin/chitosan materials

Chromium is a potentially toxic metal occurring in water and groundwater as a result of natural and anthropogenic sources. Microbial interaction with mafic and ultramafic rocks together with geogenic processes release Cr (VI) in natural environment by chromite oxidation. Moreover, Cr (VI) pollution is largely related to several Cr (VI) industrial applications in the field of energy production, manufacturing of metals and chemicals, and subsequent waste and wastewater management. Chromium discharge in European Union (EU) waters is subjected to nationwide recommendations, which vary depending on the type of industry and receiving water body. Once in water, chromium mainly occurs in two oxidation states Cr (III) and Cr (VI) and related ion forms depending on pH values, redox potential, and presence of natural reducing agents. Public concerns with chromium are primarily related to hexavalent compounds owing to their toxic effects on humans, animals, plants, and microorganisms. Risks for human health range from skin irritation to DNA damages and cancer development, depending on dose, exposure level, and duration. Remediation strategies commonly used for Cr (VI) removal include physico-chemical and biological methods. This work critically presents their advantages and disadvantages, suggesting a site-specific and accurate evaluation for choosing the best available recovering technology.

https://www.mdpi.com/1660-4601/17/15/5438/pdf

Chromium Pollution in European Water, Sources, Health Risk, and Remediation Strategies: An Overview.

A review on cleaner strategies for chromium industrial wastewater: Present research and future perspective

Resistance to antimicrobial agents by pathogenic bacteria has emerged in recent years and is a major health problem. In this context silver and silver nanoparticles (AgNP) have been known to have inhibitory and bactericidal effects and was used throughout history for treatment of skin ulcer, bone fracture, and supporting wound healing. In all of these applications prevention and treatment of bacterial colonized/infected wounds are critical. In this context silver and its derivatives play an important role in health care. Silver is widely used in clinical practice in the form of silver nitrate and/or silver sulfadiazine. In the last few years silver nanoparticles entered into clinical practice as both antimicrobial and antifungal agents. In addition, nanosilver is used in coating medical devices (catheters) and as component of wound dressings. In this paper we present summarized information about silver and nanoparticles made of silver in the context of their useful properties, especially antibacterial ones, being of a great interest for researchers and clinicians.

/pdf/certain-aspects-of-silver-and-silver-nanoparticles-in-wound-24k3mvn8bg.pdf

Certain aspects of silver and silver nanoparticles in wound care: a minireview

Evaluation of biomaterial containing regenerated cellulose and chitosan incorporated with silver nanoparticles.

This study focused on a kind of high efficiency and low cost iron oxide nanoparticles (IONPs) synthesis and loaded with sodium alginate beads used for remediation of hexavalent chromium [Cr (VI)] contaminated water Due to high toxicity and mobility of Cr (VI) is considered to be a toxic pollutant The synthesized IONPs were characterized by UV–vis and FTIR spectroscopy analysis The IONPs loaded alginate beads was characterized and its chromium remediation property was evaluated by diphenyl carbazide assay and batch experiment was performed at different pH ranges (pH 1–7) The present study revealed that Cr (VI) is effectively reduced by IONPs loaded alginate beads nearly 90 % at pH 25 with the average size of 2 mm and the stability of the interacted particle observed around 60 min at 500 rpm Finally it was demonstrated that, a cost effective method for the in situ remediation of Cr (VI) was achieved by IONPs loaded alginate beads

An in vitro study on hexavalent chromium [Cr(VI)] remediation using iron oxide nanoparticles based beads

Chromium remediation and toxicity assessment of nano zerovalent iron against contaminated lake water sample (Puliyanthangal Lake, Tamilnadu, India)

Objective: The objective of the present investigation is to assess the biochemical analysis in the effluent sample collected from the nearby runoff of common effluent treatment plant (CETP) at Valayampet, Vaniyambadi, Tamilnadu, India, Methods: Biochemical characteristics of the effluent were determined as per the protocol derived by American public health association (APHA). Results: The results indicated that effluent sample was found toxic in nature, having high BOD, COD, TDS and Cr (VI) content (3.13 mg/L). Conclusion: As per the results obtained it was concluded that leather industry should make all attempts to reduce its impact on environment by making every effort to reuse and recycle chemical compounds. Keywords: Tannery, Vaniyambadi, effluent, CETP, chromium.

Biochemical analysis of tannery effluent

Parthenium hysterophorus an annual herbaceous weed is known for its vigorous growth and as a causative agent for contact dermatitis, hay fever and diarrhea in humans and systemic toxicity in livestock. However, in spite of all the problems associated with this weed, some beneficial activities also reported. The objective of this study is to evaluate the potential of Parthenium hysterophorus leaf extracts for the synthesis of nanoscale zerovalent iron (nZVI) and their chromium remediation property. Due its high toxicity and mobility, hexavalent chromium is considered to be a high priority pollutant. In addition this work was executed to carry out toxicity appraisal in a water sample collected from Puliyanthangal Lake, Tamilnadu, India using nZVI. The water samples were examined before and after the nZVI application by means of microbial cultivation tests, phospholipid fatty acid analysis (PLFA) and toxicological tests. The present experimental results revealed that Cr (VI) is considerably adsorbed on nZVI nanoparticles and it could be a cost effective method for the in situ remediation of Cr (VI). In addition, standard plate count assay showed the dose dependent decrease in the bacterial cell viability in lake water sample after the addition of nZVI.

M.I. Niyas Ahamed

Papers

Evaluation of biomaterial containing regenerated cellulose and chitosan incorporated with silver nanoparticles.

An in vitro study on hexavalent chromium [Cr(VI)] remediation using iron oxide nanoparticles based beads

Chromium remediation and toxicity assessment of nano zerovalent iron against contaminated lake water sample (Puliyanthangal Lake, Tamilnadu, India)

Biochemical analysis of tannery effluent

Green synthesis and toxicity assessment of nano zerovalent iron against chromium contaminated surface water