Редакционен коментар
Акустични
проблеми на откритите обществени паркинги
А.
Ковачев, Н. Николов 4-14
Синхронни
хидрогеоложки методи за детекция на подземни
води
С.
Велкоски 15-20
П. Стоянова, М.
Димитрова, Р. Недков, Д. Панайотова, В. Апостолова, М. Захаринова, И.
Иванова 21-26
II. Екологизация на селското
стопанство
Състояние
и използване на оборския тор в България
Т. Иванова
27-32
III.Технологии за пречистване
Анаеробна
микробна биодеградация на
целулозен
материал
при две различни температури
В.
Хубенов, В. Денчева, П. Павлов, Хр. Георгиева, Д. Денчев 33-39
И. Симеонов, В.
Илин, Д. Денчев, П. Ангелов, Л. Старкова 40-49
IV. Микроорганизми и околна среда
Интегриран
биотехнологичен процес за получаване
на
биологично активни вещества от нативно нишесте и очистване на води,
замърсени с тежки метали
К. Цекова, В. Денчева,
К. Петров
50-58
V. Лесобиология
Климатични
промени и екологичен риск за
състояние на гори от ниската лесорастителна зона
Н.
Стоянова, Е. Попов, А. Делков, Д. Стоянов
59-67
Прилагане
на късометражна въжена линия Коллер
300 в сечища на Витоша и Огражден
Д.
Димитров
68-72
СИНХРОННИ ХИДРОГЕОЛОЖКИ МЕТОДИ ЗА ДЕТЕКЦИЯ НА ПОДЗЕМНИ ВОДИ
Abstract: The
Key words: atmospheric pollution, satellite and ground data
СЪСТОЯНИЕ И ИЗПОЛЗВАНЕ НА ОБОРСКИЯ ТОР В
БЪЛГАРИЯ
Т. Иванова
STATE
AND USING OF NATURAL FERTILIZER IN
Т. Ivanova
Abstract: Two of the most important documents of the European
water politic – Directives for urban waste-water treatment and for
nitrates.
The success of these directives depends on the commitment of the
member-states
to definite their sensitive and vulnerable zones. In realization of the
directives are definite nitrate vulnerable zones, and principles of
Good
agricultural and environmental practices and Program for reduction and
eradication of nitrate pollution from agricultural sources in
vulnerable zones
are confirmed.
Keywords: natural
fertilizer, European
water policy, Nitrate directive, Good agricultural and environmental
practices,
nitrate vulnerable zones
АНАЕРОБНА МИКРОБНА БИОДЕГРАДАЦИЯ НА
ЦЕЛУЛОЗЕН МАТЕРИАЛ ПРИ ДВЕ РАЗЛИЧНИ ТЕМПЕРАТУРИ
В. Хубенов, В. Денчева, П. Павлов, Хр. Георгиева, Д.
Денчев
ANAEROBIC MICROBIAL BIODEGRADATION OF CELLULOSIC MATERIAL
AT TWO DIFFERENT TEMPERATURES
V. Hubenov, V. Dencheva, P.
Pavlov, Hr. Georgieva, D. Denchev
Abstract:
Experiments
for microbial anaerobic digestion of cellulose (filter paper) in
mesophilic (34oC)
and thermophilic (55 oC) conditions were provided. The
metabolic
products received in the first phase of the anaerobic degradation
process were
organic acids, oligosaccharides and presumably hydrogen, all of them
transformed
afterwards to methane. Independently of the temperature conditions,
specific
cellulolytic microbial groups, predominating in the thermophilic
conditions
only, were found in the cultural liquid. The process at the higher
temperature
was with better technological indexes as well as with higher biogas
yields and impossibility
of proteolytic microorganism development.
Key words: Mesophilic,
thermophilic anaerobic process, cellulose, biodegradation cellulolytic
bacteria.
АНАЕРОБНА
БИОДЕГРАДАЦИЯ
НА ОРГАНИЧНИ ОТПАДЪЦИ И ВЪЗМОЖНОСТИ ЗА ИЗПОЛЗВАНЕТО Й ПРИ ПИЛОТИРАНИ
КОСМИЧЕСКИ
ПОЛЕТИ
И. Симеонов, В.
Илин,
Д. Денчев, П. Ангелов, Л. Старкова
ANAEROBIC
DIGESTION OF ORGANIC WASTES AND ITS POSSIBLE USE FOR PILOTED SPACECRAFT
FLIGHTS
I. Simeonov,
V. Ilyin, D. Denchev, P. Angelov, L.
Starkova
Abstract: In this paper a
possibility of applying anaerobic digestion for reduction and
stabilization of
the organic fraction of solid wastes generated during piloted
spacecraft
flights is discussed. In connection with the future piloted space
missions to
Mars, the problem of utilizing the wastes accumulated on board the
spacecraft
becomes especially acute. Astronauts use for hygiene needs chiefly
napkins and
towels on cellulose basis, forming the greater part of the wastes.
Another
potential part of the wastes represent the uneatable residues of plants
grown
on board that are degradable easier. For the purpose, microorganisms of
the
genus Clostridium, capable of functioning in aerobic as well as in
anaerobic
conditions can be used. The anaerobic digestion is preferable, since
the oxygen
necessary for the crew is not consumed. The anaerobic processes can be
realized
by bacteria developing at mesophilic (37°C) or thermophilic conditions (55°C).
ИНТЕГРИРАН БИОТЕХНОЛОГИЧЕН ПРОЦЕС ЗА
ПОЛУЧАВАНЕ НА БИОЛОГИЧНО АКТИВНИ ВЕЩЕСТВА ОТ НАТИВНО НИШЕСТЕ И
ОЧИСТВАНЕ НА
ВОДИ, ЗАМЪРСЕНИ С ТЕЖКИ МЕТАЛИ
К. Цекова, В. Денчева, К. Петров
INTEGRATED
BIOTECHNOLOGICAL PROCESS FOR PRODUCTION OF BIOLOGICALLY ACTIVE
COMPOUNDS FROM
RAW STARCH AND HEAVY METALS REMOVING FROM WASTEWATER
Abstract: Strains of Rhizopus
fungi were investigated for
lactic acid production from raw starch. R.
arrhizus and R. oryzae showed
higher biochemical activity for starch conversion to lactic acid and
ethanol while
R. delemar produced more fungal
biomass as a by-product. Growth conditions: 35 g/L starch, pH 6 and
30°C were
favorable for both starch saccharification and valuable products
formation,
resulting in lactic acid yield of 0.71 g/g starch associated with 0.36
g/g
ethanol and 0.73 g/g fungal biomass with R. arrhizus as a producer. The
ability of waste mycelia to remove Cu, Co, Mn, Ni and Zn ions from
single as
well as mixed solutions was assessed. The results obtained showed that
the
waste fungal biomasses may be successfully used as biosorbents for
treatment of
metal-polluted industrial wastewaters.
Keywords: Rhizopus sp., raw starch, lactic acid,
ethanol, heavy metals, biosorbtion
КЛИМАТИЧНИ ПРОМЕНИ
И ЕКОЛОГИЧЕН РИСК ЗА СЪСТОЯНИЕ НА ГОРИ ОТ НИСКАТА ЛЕСОРАСТИТЕЛНА ЗОНА
Н. Стоянова, Е. Попов, А. Делков, Д. Стоянов
CLIMATE
CHANGES AND ECOLOGICAL RISK FOR STATUS OF FORESTS IN THE
N. Stoyanova, E. Popov, A.
Delkov, D. Stoyanov
Abstract:
Key words: ecology, climate,
forest ecosystems, precipitation, drought periods
ПРИЛАГАНЕ
НА КЪСОМЕТРАЖНА ВЪЖЕНА ЛИНИЯ КОЛЛЕР 300 В СЕЧИЩА НА
ВИТОША И
ОГРАЖДЕН
Д. Димитров
APLAING
of
D.
Dimitrov
Absract: The
aim of the present investigation
was to compare the work
time and the productivity
of forest skyline Koller 300 in
different broadleaved and coniferous forests. There were investigated
three road-track situated in Vitosha and Ograjden mountain. The
time for carried out of one full road-bed was divided into ten
work phases. It was established that
independently by the type of the loading wood the
most time was
consumed for operation ,,Moving
of loaded carriage to landing site” - at
trace 1 – 53,5 %, аt trace 2 – 51,3% and at trace 3-21,0%. In a result of this
investigation it
was established that the productivity of this type of skyline in
deciduous
forests was 3,22
m3/ha and in coniferous forest it was 5,91
m3/ha. It can be pointed that the productivity of Koller
300
was better in the coniferous forest.
Key words: Koller K
300, forest skyline, productivity, load