Search results for "SAPR"

Monochamus spp. un citu skujkoku saproksilo vaboļu (Coleoptera) sugu sabiedrības un to ievākšanas metodikas efektivitātes novērtējums kaitīgo organis…

2018

Kopš 1999. gadā Portugālē ieviesās priežu koksnes nematode Bursaphelenchus xylophilus, Eiropā Monochamus ģints koskngraužu nozīmība kā meža kaitēkļiem ievērojami pieauga, jo tie ir šīs nematodes galvenie vektori. B. xylophilus izraisa priežu vīti, kuras dēļ iet bojā liels koku daudzums. Latvijā nav pētīta Monochamus ģints sastopamība un feromonu lamatu efektivitāte, kas ir svarīga informācija, ja nākotnē būs vajadzība kontrolēt B. xylophilus riska zonās – teritorijās, kurās ir augstāka varbūtība kaitīgā organisma ieviešanās riskam. Darba mērķis ir noskaidrot Monochamus ģints koksngraužu sastopamību Latvijā riska zonu vietās un feromonu lamatu efektivitāti skujkoku saproksilo vaboļu ķeršanai…

Sapratīga termiņa jēdziens un noteikšana Patērētāju tiesības aizsardzības likuma 28.panta ceturtās daļas kontektā

2022

Šī darba mērķis ir izpētīt Patērētāju tiesību aizsardzības likuma 28.panta ceturtajā daļā paredzētās pārdevēja vai pakalpojuma sniedzēja tiesības un pienākumus pret patērētāju, kad pirkuma objekts, kuram ir trūkumi, apmaināms vai tā neatbilstība līguma noteikumiem novēršama saprātīgā termiņā, noskaidrot šī panta atbilstību Eiropas Savienības Direktīvām, kā arī analizēt, saprast un salīdzināt juridiskās literatūras autoru domas attiecībā uz šo pantu. Tāpat darbā tiks apstiprināti vai apgāzti pieņēmumi, interpretēti viedokļi un iegūti jauni viedokļi par iespējamiem risinājumiem un uzskatiem, kādam vajadzētu būt saprātīgam termiņam, lai labāk saprastu kā rīkoties gan patērētājam, gan pārdevēja…

Saprolegnia multispora, a new oomycete isolated from water samples taken in a river in the Burgundian region of France

2004

Saprolegnia multispora is described from water and floating organic matter taken in the Tille River, in the Burgundian region of France. The new species is illustrated and compared with other species of the genus. Distinguishing characteristics of S. multispora are the production of smooth-walled oogonia containing many subcentric oospores which are (1−) 11–70 (−100) per oogonium. The antheridial branches supplying the oogonia are predominantly diclinous, but at times these may be monoclinous and androgynous. Morphological features of the oomycete and the sequence of the ITS region of its rDNA as well as their comparison with related species are discussed in this article.

Dynamics at the Strait of Sicily and Mediterranean Sapropels

2012

Ģeogrāfija. Ģeoloģija. Vides zinātne: referātu tēzes

2008

Over-estimation of efficiency of weathering in tropical “Red Soils”: its importance for geoecological problems

2000

Abstract Weathering and soil formation rates are regarded as the main criteria of a tolerable soil loss. The efficiency of weathering in the seasonal semiarid tropics has often been greatly over-estimated especially in the geomorphologic literature in which weathering is assumed to be as fast or even faster than surface erosion. Six selected “Red Soils” in two intramontane basins of hyperthermic SW Nepal near the border with India, with 1500–1750 mm annual rainfall (5 humid months), and a “Black Soil” near Baroda, Gujarat, India (3–4 humid months) were studied mineralogically. Two of the “Red Soils” have TL ages between 10 and 30 ka, the “Black Soil” has one of about 10 ka. The yellowish si…

Orbital variations in planktonic foraminifera assemblages from the Ionian Sea during the Middle Pleistocene Transition

2013

Abstract The Middle Pleistocene Transition (1.2–0.7 Ma) is the most recent re-organization of the global climate system which includes variations in the frequency and amplitude of glacial/interglacial cycles, increased ice sheet volume, sea surface temperature cooling and a significant drop in the CO 2 atmospheric levels. Here we present high-resolution planktonic foraminifera data (mean sampling resolution of about 780 years) from core LC10 recovered in the Ionian Sea (eastern Mediterranean), between 1.2 and 0.9 Ma. Selected taxa, among them G. ruber , T. quinqueloba and G. bulloides , show significant periodicities that can be associated to orbital cycles, mainly precession and obliquity.…

Conflicting coccolithophore and geochemical evidence for productivity levels in the Eastern Mediterranean sapropel S1

2011

Abstract The cyclic development of anoxic conditions in the eastern Mediterranean deep sea waters is one of the most fascinating research topics in paleoceanographic studies. In combination with bottom water stagnation, enhanced primary production is a common explanation for the deposition of organic-rich layers (sapropels). This is supported by extensive evidence from both geochemical and micropaleontological studies. The correspondence of recent sapropel layers with peaks of the lower photic zone coccolithophore species Florisphaera profunda has been interpreted as a proxy for the development of a deep chlorophyll maximum (DCM), due to the pycnocline/nutricline shallowing into the lower p…

Disappearance of malachite green residues in fry of rainbow trout (Oncorhynchus mykiss) after treatment of eggs at the hatching stage

2009

Abstract The disappearance of malachite green (MG) residues was determined in fry of rainbow trout (Oncorhynchus mykiss) after six repeated treatments of the eggs at the hatching stage with MG oxalate at exposure levels of 1, 3 and 6 mg l− 1 for 30 min. Fry samples were taken from newly hatched fry (0 days post-hatch, d.p.h.) and at regular time intervals at 16, 31, 43, 57 and 96 d.p.h. The residues of MG and its major metabolite, leucomalachite green (LMG), were found to accumulate in the fry after MG treatments of eggs, with the highest residue levels being determined in the newly hatched fry. After exposures of 3 mg l− 1 MG, mean concentrations of 1170 ± 106 µg kg− 1 and 276 ± 38.6 µg kg…

I SISTEMI AEROMOBILI A PILOTAGGIO REMOTO PER LA FOTOGRAMMETRIA AEREA DI PROSSIMITÀ: VALIDAZIONI METRICHE E ANALISI DELLE PROCEDURE

La ricerca svolta affronta le problematiche connesse con la fase di pianificazione ed esecuzione delle riprese fotogrammetriche da SAPR multirotore, con la fase di processamento di blocchi fotogrammetrici e con la valutazione degli aspetti metrici. In particolare, lo scopo della tesi è quello di definire delle procedure di rilievo da SAPR e di analizzare le problematiche connesse con la modellazione tridimensionale da dati SAPR tramite software SfM/fotogrammetrici. Per raggiungere questi obiettivi sono state scelte tre differenti aree test (Il Foro Romano del sito archeologico di Sepino, Villa Lampedusa ai Colli e il sito archeologico di Eraclea Minoa) su cui è stata stati realizzata una se…