Mechanical characterizations of waste face masks reinforced polyester composites: Recycling wastes into resources.

Face masks are made of non-decomposable thin polypropylene sheets. People are discarding them in parks, beaches, drains, landfills, and roadsides because of a deficiency in recycling efforts. It poses health and environmental risks through soil, water, and air pollution, as well as implanting microplastics into aquatic and different active organisms via food chains.

Effect of Reaction Parameters on CO Absorption from Biogas Using CaO Sorbent Prepared from Waste Chicken Eggshell.

This study provides an efficient and straightforward approach to eliminate carbon dioxide (CO) by absorption using a calcium oxide (CaO) sorbent derived from chicken eggshells. The sorbent concentration, stirring speed, and contact time were varied. The optimal condition for CO removal was a 10% calcium hydroxide (Ca(OH)) suspension at 600 rpm with 20 min interaction.

Effect of fibre loading on mechanical properties of jute fibre bundle reinforced gypsum composites.

Gypsum plasterboards are widely used in interior decoration like false ceilings, wall partitioning etc. The main component of this plasterboard is gypsum, which is a mineral material. These boards contain poor mechanical strength with lower durability.

Waste newspaper driven activated carbon to remove polycyclic aromatic hydrocarbon from wastewater.

In this study, a carbon-based adsorbent was developed from waste newspaper through pyrolysis at 800 °C to evaluate the removal efficiency of polycyclic aromatic hydrocarbons (Benzo[ghi]perylene (BghiP) and Indeno [1,2,3-cd] pyrene (IP)) from wastewater. The surface area of the developed adsorbent was estimated at 509.247mg which allowed the adsorption of the PAHs from wastewater.

Incorporation of Ag-doped ZnO nanorod through Graphite hybridization: Effective approach for degradation of Ciprofloxacin.

To remove the Ciprofloxacin (CIP) from aqueous solution, ZnO-Ag-Gp nanocomposite exhibited efficient photocatalytic properties. The biopersistent CIP is pervasive in surface water and also hazardous to human and animal health. This study utilized the hydrothermal technique to prepare Ag-doped ZnO hybridizing Graphite (Gp) sheet (ZnO-Ag-Gp) to degrade pharmaceuticals pollutant CIP from an aqueous medium.

Preparation of Manganese Oxide Nanoparticles with Enhanced Capacitive Properties Utilizing Gel Formation Method.

Development of efficient and environmentally benign materials is important to satisfy the increasing demand for energy storage materials. Nanostructured transition-metal oxides are attractive because of their variety in morphology, high conductivity, and high theoretical capacitance. In this work, the nanostructured MnO was successfully fabricated using a gel formation process followed by calcination at 400 °C (MNO4) and 700 °C (MNO7) in the presence of air.

Forced Convective Heat Transfer Coefficient Measurement of Low Concentration Nanorods ZnO-Ethylene Glycol Nanofluids in Laminar Flow.

This paper presents the experimental forced convective heat transfer coefficient (HTC) of nanorods (NRs) zinc oxide-ethylene glycol nanofluids (ZnO-EG NFs) in laminar flow. First, ZnO NRs were synthesized using a hydrothermal method that uses zinc acetate dihydrate [Zn(CHCOO)·2HO] as a precursor, sodium hydroxide as a reducing agent, and polyvinylpyrrolidone (PVP) as a surfactant. The hydrothermal reaction was performed at 170 °C for 6 h in a Teflon-lined stainless-steel tube autoclave.

Isolation, characterization and in vitro antioxidant activity screening of pure compound from black pepper (Piper nigrum).

The present study's aims of isolation, characterization and in vitro antioxidant activity screening of pure compound from Black pepper (Piper nigrum) were investigated. Nowadays, scientific exploration of medicinal plants from natural sources has become the prime concern globally. All the crude drugs that have been isolated from natural plant origin (herbs, root, stem, bark, fruit and flower) have great significance in drug discovery as well as a lead compound to demonstrate great synergistic effect on pharmacology.

Triglyceride Conversion of Waste Frying Oil up to 98.46% Using Low Concentration K/CaO Catalysts Derived from Eggshells.

In this study, biodiesel, also known as fatty acid methyl ester (FAME), was synthesized from multi-stage frying waste soybean oil using chicken eggshell-derived CaO and potassium-impregnated K-CaO heterogeneous catalysts. Potassium-impregnated catalysts (1.25% K-CaO, 2.

Clinicopathological Study of Enterocutaneous Fistula in Mymensingh Medical College Hospital.

Enterocutaneous fistulae are a major catastrophe to the patients and surgeons and it still has high incidence of morbidity and mortality and their management remains a big challenge. Enterocutaneous fistula presents the surgeon with challenges of metabolic disorders and extensive sepsis. Total management of an intestinal fistula requires skill in nutritional support, stoma therapy, elimination of sepsis, well timed and well carried out surgery.

Mesoporous magnetic silica particles modified with stimuli-responsive P(NIPAM-DMA) valve for controlled loading and release of biologically active molecules.

Mesoporous magnetic silica particles bearing a stimuli-responsive polymer valve were prepared and their performance as a microcapsule was evaluated. In this study, first, mesoporous magnetic iron oxide (Fe3O4) particles were prepared by a solvothermal method. Then, the magnetic particles were coated with silica and functionalized with vinyl groups using 3-(trimethoxysilyl)-propyl methacrylate (MPS).

Biocompatible microcrystalline cellulose particles from cotton wool and magnetization via a simple in situ co-precipitation method.

This investigation describes the preparation of magnetically doped degradable microcrystalline cellulose (MCC) nanocomposite particles with application potential in biotechnology, solid support for biomolecule/water purification, oil recovery from water and beyond. MCC was first extracted from cotton wool, the most abundant biocompatible polymer, by sulfuric acid hydrolysis and the effect of acid strength was examined. The size of the elongated fiber structure was reduced with increasing acid strength.

Clinicopathological stages of carcinoma breast patient.

Carcinoma of breast is the second most common cancer among women next to uterine cervical cancer in Bangladesh. It was well established that 5 years survival rates greatly vary among the different stages of carcinoma of breast disease. The study was carried out to see the stages of presentation of carcinoma of breast patient to a tertiary level hospital attended first time for medical help as well as to find out the factors responsible for the late (advanced) stage presentation.

Pattern of malignancy in clinically solitary thyroid nodule.

Solitary thyroid nodule (STN) is a common thyroid disorder. Clinically recognized thyroid carcinoma constitutes less than 1% of human malignant tumours. The risk of malignancy in solitary thyroid nodule is greater than other thyroid swelling.

Correlation between clinical presentation, peroperative finding and histopathological report in acute appendicitis.

Acute appendicitis is usually encountered clinically as acute abdomen. Typical cases are easy to diagnose, but sometimes it is very difficult to make a diagnosis in atypical cases. The objective of the study was to determine the diagnostic accuracy in patient of clinically diagnosed acute appendicitis.

A young lady with secondary tuberculosis of breast.

Tuberculosis of breast is an extremly rare form of extrapulmonary tuberculosis even in endemic area like Bangladesh and the incidence is 0.25-4.5% of all breast lesions.

A 12 years old boy with carcinoma rectum.

Primary gastrointestinal malignancy constitutes approximately 2% of pediatric neoplasm and colorectal carcinoma is the second most common malignancy among them. This is one of the rarer diseases in children. Carcinoma of the rectum must be considered as a differential diagnosis in childhood if patient presents with per rectal bleeding in conjunction with abdominal pain & weight loss.

Antiparasitic, nematicidal and antifouling constituents from Juniperus berries.

A bioassay-guided fractionation of Juniperus procera berries yielded antiparasitic, nematicidal and antifouling constituents, including a wide range of known abietane, pimarane and labdane diterpenes. Among these, abieta-7,13-diene (1) demonstrated in vitro antimalarial activity against Plasmodium falciparum D6 and W2 strains (IC(50) = 1.9 and 2.

Giant penoscrotal filariasis.

A 42 year old male individual having a hugely distended scrotum and barely perceptible penis, unable to maintain his livelihood on account of his handicap and socially withdrawn for the fear of humiliation, got admitted into the Surgery department of Mymensingh Medical College Hospital in August 5, 2007. The person had been carrying the so called curse for the last four years. On the basis of clinical, serological and haematological examinations, diagnosis was established as lymphatic filariasis causing elephantiasis of the scrotum.

Choledochal cyst.

Choledochal cyst, a congenital anomaly, is a premalignant condition. Progressive damage to the bile ducts and to the liver parenchyma may also have association with the condition. Subsequent risk of developing cholangiocarcinoma may be lessen by early diagnosis and prompt definitive surgical treatment, that may even permanently correct the condition.

Tuberculous prostatitis--a case report.

Tuberculous prostatitis is a rare condition. A 55 years-old man admitted into a surgery unit of Mymensingh Medical College Hospital with features of prostatism. After clinical examination and investigations, it was diagnosed as a case of benign enlargement of prostate (BEP) and surgery was decided to do.