REVIEW OF THE MAIN EQUIPMENT USED FOR SEPARATING CONTAMINANTS FROM WHEAT SEEDS, CLASSIFICATION ACCORDING TO THEIR FUNCTIONAL ROLE

Wheat seed cleaning require a complex set of operations to be performed in order to remove impurities from the grain mass and obtain high quality final products. These operations are carried out in a technological flow, starting from harvesting until the final processing stage, depending on the crop destination. The stages used to clean the wheat grain are usually following the operations: cleaning in aerodynamic separators, cleaning with sieves, sorting in indent cylinder separator, additional cleaning in special cleaning machines. The paper presents a synthesis of the primary processing phases of wheat seeds for the use in the food industry depending on their functional role

UV DISINFECTION - A METHOD OF PURIFYING WASTEWATER FROM FARMS – A REVIEW

The livestock industry increased significantly globally due to increasing demand for animal products. There are however, growing concerns on the environmental risks, associated with the disposal of untreated livestock wastewater into streams and rivers. Disinfection is considered to be the primary mechanism for the inactivation/ destruction of pathogenic organisms to prevent the spread of waterbornediseases to downstream users and the environment.Water disinfection using ultraviolet light is a newer process that currently has a limited use area [5].The purpose of this paper is to present the ultraviolet disinfection process used for the treatment of waste water

ADVANCED TECHNOLOGIES FOR WASTEWATER TREATMENT BY UV – A REVIEW–

Reclamation and reuse ofwastewater is one of the most effectiveways to alleviatewater resource scarcity.Disinfection plays a key role in reuse of wastewater for eliminatinginfectious diseases.Water disinfection using ultraviolet light is a newer process that currently has a limited use area. Ultraviolet(UV) disinfection is now widely implemented as a tertiary treatment forwastewater reclamation. The purpose of this paper is to present the most representative studies on the use of ultraviolet in wastewater treatment

INFLUENCE OF THE NUMBER OF PASSES OF AGRICULTURAL MACHINERY ON PENETRATION RESISTANCE AND THE DEGREE OF SOIL COMPACTION

In the context of the ongoing development of mechanized agriculture, which implies the use of heavy agricultural machinery, often on soils with high moisture content, it increased significantly the risk of soil compaction. Compaction has become a problem of major proportions especially to farmers, because this phenomenon causes environmental damage, and affects soil quality and crop production. Penetration resistance is a valuable and easy to determine indicator of the degree of compaction of agricultural soil. In this paper are presented the results of some experimental research conducted to determine the penetration resistance of a plot of clover, under the influence of the number of passes of a tractor, in order to assess, from an qualitative point of view, the degree of soil compaction

CONSIDERATIONS ON OBTAINING VARIOUS TYPES OF PELLETS FROM DIFFERENT TYPES OF BIOMASS

Materials with lignocellulosic structure (wood, straws, sawdust, etc.) representimportant energy resources. Their main disadvantage consists in the fact that they have very low density, which leads to difficulties in the process of handling, transport, storage, respectively increased production costs. Besides this, high variations of humidity in the material can generate difficulties in the operation and adjustment of processes within the installations where they are used. These drawbacks can be improved by drying and compacting (densification) the material at very high pressures, thus obtaining wood biofuels with a uniform structure, such as pellets. The paper presents the process of compacting different types of biomass in the form of pellets, using a reduced scale pelleting machine

ASPECTS ON OBTAINING THE RAW MATERIAL FOR PELLETIZING

Energy willow is one of the most important energy crops. The problem is that it is hard to be used in its natural state, because it has low density, is hard to transport and store, thus requiring processing. Pelletizing offers a real possibility to valorise willow by transforming it into solid biofuels. The paper presents experimental researches on the process of obtaining raw material from energy willow in the view of transforming it into pellets

THE INFLUENCE OF THE SPEED OF REVOLUTION OF A HAMMER MILL ON MISCANTHUS CHIPPINGS

Taking into consideration the fact that biomass is gradually replacing the existent energy resources, it is necessary to know the preparation process. The first step of this process takes place from the harvesting stage that can be done with or without cutting. High volume of biomass represents an impediment in its usage as a final product. It is necessary to transform it in pellets or briquettes. Thus, each stage of the preparation process was studied by researchers both for establishing the influence of biomass properties on the process as well as for designing the equipment used for preparation process. In this paper experimental research regarding the influence of the speed of revolution of a hammer mill on miscanthus chippings were done. The usage of hammer mills it happens in generally during the second stage of preparation process which refers to fine grinding process of vegetal biomass

SPECTRUL EPIDEMIOLOGIC, CLINIC ŞI EVOLUTIV AL CAZURILOR DE RUJEOLĂ INTERNATE ÎN SPITALUL CLINIC DE BOLI INFECŢIOASE ŞI TROPICALE „DR. VICTOR BABEŞ“ DIN BUCUREŞTI ÎN CURSUL EPIDEMIEI ACTUALE

Introducere. Începând cu anul 2016, România se confruntă cu o epidemie importantă de rujeolă apărută pe fondul unui procent tot mai scăzut de vaccinare. Evoluţia epidemiei a fost marcată şi de o creştere alarmantă a numărului de complicaţii şi decese. Materiale şi metode. Am evaluat retrospectiv 632 pacienţi diagnosticaţi cu rujeolă, internaţi în Spitalul Clinic de Boli Infecţioase şi Tropicale „Dr. Victor Babeş“, în perioada ianuarie 2016 – decembrie 2017. Datele epidemiologice, caracteristicile clinice şi rezultatele probelor biologice au fost obţinute din fişele medicale ale pacienţilor. Rezultate. Din cei 632 de pacienţi, 341 (53,9%) au fost de sex masculin. Grupa de vârstă cea mai afectată a fost 1-4 ani (39,2%), urmată de cea a sugarilor cu un procent de 19,6%. O treime din cazuri (31,3%) au avut contactul infectant în cadrul familiei. În ceea ce priveşte statusul vaccinal, aproape jumătate din pacienţi (47,1%) nu au fost vaccinaţi, iar 44,3% nu cunoşteau istoricul de vaccinare (probabil nevaccinaţi sau incomplet vaccinaţi). Complicaţiile virale au fost prezente la majoritatea pacienţilor (84,1%) sub forma unei pneumonii interstiţiale. Pneumonia bacteriană a fost prezentă la 15% dintre pacienţi, iar dintre aceştia 45,2% au asociat şi insuficienţă respiratorie. Şase pacienţi au necesitat transfer în secţia de terapie intensivă pediatrie pentru suport respirator, înregistrându-se 2 decese. Laringita a fost prezentă în 8,2% cazuri, otita în 12% cazuri, în timp ce 61,7% dintre pacienţi au avut afectare gastrointestinală. Paraclinic, a fost evidenţiată citoliza hepatică la 101 (15,9%) pacienţi şi diselectrolitemia a fost prezentă la 94 (14,8%) din cazuri. Concluzii. Studiul prezent arată creşterea alarmantă a incidenţei bolii şi a complicaţiilor sale în ultimii 3 ani, mai ales la vârstele mici. Considerăm imperios necesară aplicarea programului de vaccinare pentru a asigura o acoperire vaccinală optimă, utilă atât în stoparea epidemiei actuale, cât şi în prevenirea unor viitoare epidemii