Designing a set of English for specific purposes study materials for welding students at Viljandi Vocational Training Centre

The aim of this master thesis is to design a set of study materials for welding students at Viljandi Vocational Training Centre (VIKK). The author’s interest in the topic arose from the practical point of view; namely, from the experience of lacking suitable study materials for ESP courses generally and more precisely, for welding students at VIKK. The main research question that arose when compiling such a study was what vocabulary should be taught for welding students at VIKK? The first chapter of this paper gives an overview of ESP and materials design; in addition, examines ESP and corpus studies and analyses the national curriculum and school curriculum of welding. The second chapter describes the Brigham Young University Wikipedia corpus and how a welding sub-corpus was built by using its online application. The results of the analysis were used for creating a welding word list for students at VIKK. The created vocabulary list includes terms in English and Estonian. Additionally, based on this vocabulary list six exemplary exercises were compiled.https://www.ester.ee/record=b5237861*es

Esimene Euroopas: tüvirakuravim põletuskahjustuse tagajärjel tekkinud silma sarvkesta tüvirakkude puudulikkuse raviks

Eesti Arst 2015; 94(2):111–11

Uudsed ravimid

Eesti Arst 2014; 93(11):650–65

Embrüoselektsiooni uued võimalused – embrüodiagnostika

Viljatuse kõige tõhusamaks ravimeetodiks on kehaväline viljastamine, mida Eestis on rakendatud alates 90. aastate algusest. Kehavälise viljastamise õnnestumiseks on oluline embrüote selektsioon, et siirata kõige arenemisvõimelisem ja kromosomaalselt normaalne embrüo. Selektsiooni tulemuslikkuse parandamise uueks võimaluseks on embrüodiagnostika. Eesti Arst 2003; 82 (3): 188–19

Height growth and the survival of Norway spruce on a comparison of local and imported planting stock

Magistritöö eesmärk on võrrelda kohaliku päritoluga hariliku kuuse kultiveerimismaterjali Leedust imporditud kultiveerimismaterjaliga, nende kõrguskasve ja säilivust. Lisaks kinnitada või ümber lükata väide, et imporditud taime kõrguskasv ületab kodumaise taime kasvu esimestel aastatel. Uurimus viidi läbi OÜ Södra Metsa Tartumaa metsades. Üheksal katastril valiti kokku 39 eraldist, millel mõõdeti 101 ringproovitükki suurusega 100m2 . Mõõtmised teostati 2015. aasta sügisel ja talvel. Ringproovitükil loendati puud, mõõdeti nende kõrgus ja viimase aasta juurdekasv. Proovialade valikul selgus, et Eesti päritolu taimed on istutatud aastatel 2011, 2012 ja 2014 ning Leedu päritolu taimed aastatel 2012 ja 2013. Seega sama aasta kultuure leidus vaid osaliselt. Andmete analüüs näitas, et üldiselt oli parem kõrguskasv Eesti päritoluga taimedel, aga sama aasta kultuurides olid ülekaalus Leedu päritolu taimed. Üldjuhul oli säilivus väikese vahega parem Leedu päritolu taimedel. Aastal 2015 tehtud uurimuses, kus võrreldi Valgevene päritolu hariliku kuuse taimi Eesti päritolu taimedega, selgus, et paremad kõrgusnäitajad on Valgevene päritolu taimel. Sama tulemus selgus ka 2007. aastal valminud Eesti Maaülikooli bakalaureusetöös.The aim of the Master’s Thesis is to compare the local cultivating material of Norway spruce to the cultivating material imported from Lithuania, by examine their height growth and preservation. Besides to confirm or rule out the statement that the height growth of imported plants is greater than the height growth of local plants on the first few years. Study was implemented in the forests of OÜ Sõdra Mets in Tartu county. On the 9 cadastral parcels 39 stand compartments were measured on the 101 circular plots, each of them 100 m2 . The measurements were taken on the autumn and winter of 2015. On the circular plot the number of trees were counted, the height of the tree and the last years height growth was measured. Estonian plants are planted in the years of 2011, 2012, 2014 and Lithuanian plants in the years of 2012, 2013. In consequence the cultures of the same year was analysed only partly. The analysis of the data showed that generally the Estonian pants had a better height growth, but from the same year’s cultures the Lithuanian plants had better height growth. In general the preservation was higher amongst Lithuanian plants. The research made in 2015, where the Belarus and Estonian Norway spruce plants were compared, showed that Belarus plants had better growth measures. The same result came out from the Bachelor Thesis made in 2007 in the Estonian University of Life Sciences

Koostöise õpetamise rakendamine kutseõppe kontekstis

https://www.ester.ee/record=b5405199*es

Impact of PCB and p,p'-DDE contaminants on human sperm Y : X chromosome ratio: Studies in three European populations and the inuit population in Greenland

Recent studies indicate that persistent organohalogen pollutants (POPs) may contribute to sex ratio changes in offspring of exposed populations. Our aim in the present study was to investigate whether exposure to 2,2',4,4',5,5'-hexachlorobiphenyl (PCB-153) and dichlorodiphenyldichloroethene (pp'-DDE) affects sperm Y:X chromosome distribution. SUBJECTS AND METHODS: We obtained semen and blood for analysis of PCB-153 and pp'-DDE levels from 547 men from Sweden, Greenland, Poland (Warsaw), and Ukraine (Kharkiv), with regionally different levels of POP exposure. The proportion of Y- and X-chromosome-bearing sperm in the semen samples was determined by two-color fluorescence in situ hybridization analysis. RESULTS: Swedish and Greenlandic men had on average significantly higher proportions of Y sperm (in both cohorts, 51.2%) and correspondingly higher lipid-adjusted concentrations of PCB-153 (260 ng/g and 350 ng/g, respectively) compared with men from Warsaw (50.3% and 22 ng/g) and Kharkiv (50.7% and 54 ng/g). In the Swedish cohort, log-transformed PCB- 153 and log-transformed pp'-DDE variables were significantly positively associated with Y-chromosome fractions (p-values 0.04 and < 0.001, respectively). On the contrary, in the Polish cohort PCB-153 correlated negatively with the proportion of Y-bearing fraction of spermatozoa (p = 0.008). CONCLUSIONS: The present study indicates that POP exposure might be involved in changing the proportion of ejaculated Y-bearing spermatozoa in human populations. Intercountry differences, with different exposure situations and doses, may contribute to varying Y:X chromosome ratios

Impact of PCB and p,p′-DDE Contaminants on Human Sperm Y:X Chromosome Ratio: Studies in Three European Populations and the Inuit Population in Greenland

OBJECTIVE: Recent studies indicate that persistent organohalogen pollutants (POPs) may contribute to sex ratio changes in offspring of exposed populations. Our aim in the present study was to investigate whether exposure to 2,2′,4,4′,5,5′-hexachlorobiphenyl (PCB-153) and dichlorodiphenyldichloroethene (p,p′-DDE) affects sperm Y:X chromosome distribution. SUBJECTS AND METHODS: We obtained semen and blood for analysis of PCB-153 and p,p′-DDE levels from 547 men from Sweden, Greenland, Poland (Warsaw), and Ukraine (Kharkiv), with regionally different levels of POP exposure. The proportion of Y- and X-chromosome–bearing sperm in the semen samples was determined by two-color fluorescence in situ hybridization analysis. RESULTS: Swedish and Greenlandic men had on average significantly higher proportions of Y sperm (in both cohorts, 51.2%) and correspondingly higher lipid-adjusted concentrations of PCB-153 (260 ng/g and 350 ng/g, respectively) compared with men from Warsaw (50.3% and 22 ng/g) and Kharkiv (50.7% and 54 ng/g). In the Swedish cohort, log-transformed PCB-153 and log-transformed p,p′-DDE variables were significantly positively associated with Y-chromosome fractions (p-values 0.04 and < 0.001, respectively). On the contrary, in the Polish cohort PCB-153 correlated negatively with the proportion of Y-bearing fraction of spermatozoa (p = 0.008). CONCLUSIONS: The present study indicates that POP exposure might be involved in changing the proportion of ejaculated Y-bearing spermatozoa in human populations. Intercountry differences, with different exposure situations and doses, may contribute to varying Y:X chromosome ratios