scholarly journals HISTOLOGICAL EFFECTS OF FORMALDEHYDE INHALATION ON THE ALVEOLAR ARCHITECTURE OF LUNGS OF ALBINO RATS

2019 ◽  
Vol 27 (2) ◽  
Author(s):  
Parul Saxena ◽  
Archana Sharma ◽  
Antima Gupta ◽  
Ketu Chauhan ◽  
Manish Saini ◽  
...  
Keyword(s):  
Lung Tissue ◽  
Respiratory System ◽  
Room Temperature ◽  
Medical Professionals ◽  
Albino Rats ◽  
Histological Changes ◽  
Temperature And Pressure ◽  
Formaldehyde Vapour ◽  
Formaldehyde Inhalation ◽  
Major Target

Introduction: Formaldehyde is a flammable, colourless, reactive, readily polymerized gas at normal room temperature and pressure. Formaldehyde vapour is readily absorbed from the lungs. Formaldehyde is combined with methanol and buffers to make embalming fluid. In the dissection hall, during embalming or cadaveric dissection and histo-pathological preservation, medical professionals are exposed to formaldehyde vapours. Respiratory system is the major target of formaldehyde. So, the present study aims to assess the histological changes on the architecture of alveoli of albino rats after inhalation of formaldehyde vapours. Material & Methods: 24 albino rats were exposed to formaldehyde vapours for 28 days. They were exposed with various concentrations and thus 4 groups, having 6 rats in each, were made. They were sacrificed and the lung tissue was taken and studied by using H & E stain. Results: The study shows a number of important histological changes which are concentration dependent. Conclusion: It may be concluded from the present study that concentration of formaldehyde can affect significantly on the histopathology of the lungs of albino rats.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

scholarly journals Temperature and Pressure Variation of the Cl-NQR in A2PbCl6-Crystals

1986 ◽  
Vol 41 (1-2) ◽  
pp. 311-314 ◽  
Author(s):  
Y. M. Seo ◽  
J. Pelzl ◽  
C. Dimitropoulos
Keyword(s):  
Relaxation Rate ◽  
Room Temperature ◽  
Lattice Relaxation ◽  
Pressure Variation ◽  
Mixed Crystals ◽  
Spin Lattice Relaxation ◽  
Structural Transitions ◽  
Spin Lattice Relaxation Rate ◽  
Spin Lattice ◽  
Temperature And Pressure

The 35Cl NQR frequency and spin-lattice relaxation rate in the compounds A2PbCl6 (A = Cs, Rb, NH4, K) have been investigated in the range 4.2 K to 500 K, and as a function of pressure at room temperature. NQR experiments conducted on (K: NH4)2PbCl6 mixed crystals have been used to complete the NQR-frequency versus temperature diagram of K2PbCl6, revealing two structural transitions at Tc1 ≅ 358 K and at TC2 ≅ 333 K.

scholarly journals carcinogenicity of cadmium chloride via intraoeritoneal injection in albino rats

2006 ◽  
Vol 3 (4) ◽  
pp. 702-707
Author(s):  
Baghdad Science Journal
Keyword(s):  
Connective Tissue ◽  
Lung Tissue ◽  
Cadmium Chloride ◽  
Albino Rats ◽  
Pulmonary Carcinoma

Observed visually prominent lumps on the surface of the lung or embedded in lung tissue and microscopically Register Anfaj thrombosis with pulmonary carcinoma that took shape food or with the composition of the vesicles papillomavirus lining cells cubic vertical or connective tissue and increase

Fluid and electrolyte changes of thyroidectomized rats in a cold environment

1959 ◽  
Vol 196 (6) ◽  
pp. 1214-1217 ◽  
Author(s):  
Joseph B. Boatman ◽  
John M. Walsh ◽  
Leonard I. Epstein ◽  
Marvin J. Rabinovitz
Keyword(s):  
Cold Exposure ◽  
Room Temperature ◽  
Specific Activity ◽  
Albino Rats ◽  
Cold Environment ◽  
Total Water ◽  
Tissue Water Content ◽  
Tissue Water ◽  
Sodium Potassium ◽  
Sodium Flux

Groups of adult male albino rats were thyroidectomized or sham-operated, and later subjected to 10 day, 5°C cold exposure or else maintained at 22°C room temperatures. Tissues were examined for total water, sodium, potassium, Na24 and I131-thyroxine distribution. Thyroidectomized animals in the cold showed significantly greater amounts of water and Na24 specific activity in muscle and brain. Sham-operated animals in the cold showed significantly reduced brain Na24 specific activity. Thyroxine I131/Na24 ratios in tissue were greater at room temperature in thyroidectomized animals and were decreased with cold. Sham-operated animals showed no differences in brain thyroxine I131/Na24 ratios after equilibration and small differences in muscle ratios, with cold. It was concluded that a cold environment imposed on thyroidectomized animals resulted in changes in the animal's capacity to readjust body fluids and electrolytes when compared with intact animals exposed to cold. These differences were attributable to greater tissue water content and increased sodium flux into the tissues.

Synthesis and Characterization of CoFe2O4 Nanoparticles by Glycothermal Process

2007 ◽  
Vol 544-545 ◽  
pp. 865-868 ◽  
Author(s):  
Chil Soon Lee ◽  
Dong Sik Bae
Keyword(s):  
Room Temperature ◽  
Cofe2o4 Nanoparticles ◽  
Synthesis Parameters ◽  
Metal Nitrates ◽  
Temperature And Pressure ◽  
Starting Solutions ◽  
Average Size ◽  
Glycol Solution ◽  
Mild Temperature

CoFe2O4 nanoparticles were prepared in ethylene glycol solution under mild temperature and pressure conditions by precipitation from metal nitrates. The average size of the synthesized CoFe2O4 nanoparticles was in the range of 5 to 10, and they were narrowly distributed in the crystalline phase. Their magnetic property was of superparamagnetic character at room temperature. The effect of synthesis parameters is discussed such as the pH of starting solutions and reaction temperature.

Supervision and Significance on the Core Parameters for Steam and Water System in Supercritical Utility Thermal Power Plant

2012 ◽  
Vol 610-613 ◽  
pp. 2455-2458 ◽  
Author(s):  
Guo Hua Lu ◽  
Hai Wei Lu ◽  
Wei Su ◽  
Lei Jing Wang ◽  
Zhi Ping Zhu
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Room Temperature ◽  
Iron Transport ◽  
Thermal Power ◽  
Water System ◽  
Mathematical Relationship ◽  
Economic Operation ◽  
Temperature And Pressure ◽  
Oxide Solubility

Several core parameters in supercritical thermal power plant were briefly outlined, which had the significance in safe and economic operation. The influence and damage of Cl-, SO42- in steam and water system were discussed, and the mathematical relationship between the cation conductivity and the concentration of Cl-, SO42- was described in room temperature. Meanwhile, the iron transport and deposition in steam and water system was analyzed, according to iron oxide solubility at different temperature and pressure.

Graphene Oxide PMMA Solid on the Absorption of Lead Ion

2017 ◽  
Vol 896 ◽  
pp. 32-39
Author(s):  
Po Sang Lo ◽  
Chun Ki Yeung
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Dry Mass ◽  
Optical Microscope ◽  
Test Solution ◽  
Lead Ion ◽  
Contributing Factors ◽  
Standard Solution ◽  
Temperature And Pressure ◽  
Adsorption Capability

GO-PMMA solid was used to test its ability on absorbing the lead ion obtained from standard solution. Samples of the test solution were collected at 0 min, 10 min, 30 min, 50 min and 70 min. The results analyzed from ICP reveal that GO-PMMA solid could absorb lead (II) ion sup to 68.6%, which is 65.8% higher than the control setup, i.e. PMMA solid, at room temperature and pressure. The dry mass of GO-PMMA solid is around 119.82g and the mass after testing is around 124.21g. The ability of absorption could be easily refreshed by washing with ethanol and distillated water (80/20 v/v) several times. Structure of GO-PMMA solid was characterized by FRIR and optical microscope. The oxygen-containing functional groups and the rough surface of the GO-PMMA solid are determined to be the contributing factors of the adsorption of lead (II) ion onto GO-PMMA solid. The high removal efficiency of GO-PMMA suggests its adsorption capability on lead (II) ion and can be applied to remove lead (II) ions from water.

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