Search results for "Mg"

Local tunneling study of three-dimensional order parameter in the pi band of Al-doped MgB2 single crystals

2007

We have performed local tunneling spectroscopy on high quality Mg$_{1-x}$Al$_x$B$_2$ single crystals by means of Variable Temperature Scanning Tunneling Spectroscopy (STS) in magnetic field up to 3 Tesla. Single gap conductance spectra due to c-axis tunneling were extensively measured, probing different amplitudes of the three-dimensional $\Delta_\pi$ as a function of Al content. Temperature and magnetic field dependences of the conductance spectra were studied in S-I-N configuration: the effect of the doping resulted in a monotonous reduction of the locally measured $T_C$ down to 24K for x=0.2. On the other hand, we have found that the gap amplitude shows a maximum value $\Delta_\pi= 2.3$ …

Hsp60 in embryonic and adult submandibular salivary gland: quantitative distribution patterns in normal tissue and comparison with benign and maligna…

2019

Introduction: Heat Shock Protein 60 (Hsp60) is a member of the chaperoning system that assists protein folding inside mitochondria and plays other roles beyond these organelles. It is implicated in the carcinogenic processes in various types of cancer. In human salivary glands, Hsp60 has not yet been measured or mapped in detail and its role in gland development and functioning is virtually unknown. Consequently, its potential as biomarker for gland diseases, including malignancies cannot be assessed. The S-100 protein, a known marker for schwannomas, has been found also in myoepithelial-cell carcinomas of the salivary glands. Here, we present our initial findings on the anatomic-histologic…

The significance of soils and soil science towards realization of the United Nations Sustainable Development Goals

2016

Abstract. In this forum paper we discuss how soil scientists can help to reach the recently adopted UN Sustainable Development Goals (SDGs) in the most effective manner. Soil science, as a land-related discipline, has important links to several of the SDGs, which are demonstrated through the functions of soils and the ecosystem services that are linked to those functions (see graphical abstract in the Supplement). We explore and discuss how soil scientists can rise to the challenge both internally, in terms of our procedures and practices, and externally, in terms of our relations with colleague scientists in other disciplines, diverse groups of stakeholders and the policy arena. To meet th…

Assessing impacts of soil management measures on ecosystem services

2018

Only a few studies have quantified and measured ecosystem services (ES) specifically related to soil. To address this gap, we have developed and applied a methodology to assess changes in ecosystem services, based on measured or estimated soil property changes that were stimulated by soil management measures (e.g., mulching, terracing, no-till). We applied the ES assessment methodology in 16 case study sites across Europe representing a high diversity of soil threats and land use systems. Various prevention and remediation measures were trialled, and the changes in manageable soil and other natural capital properties were measured and quantified. An Excel tool facilitated data collection, c…

Element variability in the coralline alga Lithophyllum yemenense as archive of past climate in the Gulf of Aden (NW Indian Ocean)

2017

This study presents the first algal thallus (skeleton) archive of Asian monsoon strength and Red Sea influence in the Gulf of Aden. Mg/Ca, Li/Ca, and Ba/Ca were measured in Lithophyllum yemenense from Balhaf (Gulf of Aden) using laser ablation inductively coupled plasma mass spectrometry, and Mg/Ca ratio oscillation was used to reconstruct the chronology (34 y). Oscillations of element rates corresponding to the algal growth between 1974 and 2008 were compared with recorded climate and oceanographic variability. During this period, sea surface temperatures (SST) in Balhaf recorded a warming trend of 0.55 degrees C, corresponding to an increase in Mg and Li content in the algal thallus of 2.…

Land Recht des Hertzogthumbs Curland und Semgallen

1901

Zemgaleešu simtgadu cīņas par patstāvību

1915

Dzīvojamās vides organizēšanas principi Zemgalē senatnē un mūsdienās

2015

Diplomdarba mērķis ir izveidot mūsdienu ērtībām atbilstošu dzīvojamās mājas laukos interjeru. Svarīgs autorei likās uzdotais pētījuma jautājums, lai uzzinātu, ar kādiem paņēmieniem ir iespējams izveidot mūsdienīgu dzīvojamo vidi lauku mājā. Viens no darba uzdevumiem bija atjaunot un iekārtot „Stuburu” saimniecības ēku attsaucoties uz izzinātajiem Zemgales dzīvojamo māju un mūsdienu viensētu principiem. Autore izpētīja, kā ir izveidojusies Zemgales sēta ar visiem tās veidojošajiem elementiem un ēkām, un padziļinātāk izpētīja dzīvojamās ēkas iekštelpu veidošanas principus. Lai saprastu, kā mūsdienās tiek interpretētas vai saglabātas viensētas Latvijā, autore izpētīja astoņas mūsdienu viensēta…

Ekstremālo nokrišņu raksturs un izmaiņu tendences Zemgalē un Latgalē (1950.-2013.)

2015

Bakalaura darbā “Ekstremālo nokrišņu raksturs un izmaiņu tendences Zemgalē un Latgalē (1950. – 2013.)” analizēti diennakts nokrišņu rādītāji Zemgales un Latgales reģioniem. Lai detalizēti identificētu ekstremālo vērtību tendences, tika izmantoti pieci nokrišņus raksturojošie indeksi – intensīvo nokrišņu dienu (R10 mm), ļoti intensīvo dienu (R20 mm), mēreni mitro dienu (R75p), ļoti mitro dienu (R95p) un ekstremāli mitro dienu (R99p) indeksu izmaiņas 63 gadu laikā. Pētījumā izmantotas kopā 13 novērojumu stacijas – 7 stacijas Zemgalē un 6 - Latgalē. Pētījums ir aktuāls, jo ekstremālo nokrišņu ilglaicīgo tendenču noteikšana, var palīdzēt sabiedrībai sagatavoties iespējamiem plūdu riskiem dažādā…

Tērvetes upes ielejas morfoloģija un veidošanās

2015

Bakalaura darbā apskatīta Tērvetes upes mūsdienu ieleja un procesi, kas to veidojuši laika posmā no Latvijas apledojuma Linkuvas oscilācijas līdz mūsdienām. Teorētiskajā daļā apskatīti galveni noteces ieleju veidotājspēki, kā arī morfoloģiskie procesi, kas veido mūsdienu Latvijas upju ielejām raksturīgos elementus. Sniegts ieskats bakalaura tapšanas gaitā izmantotajās pētniecības metodēs un materiālos. Rezultātu sadaļā analizēti izveidotie ielejas šķērsprofili un garenprofili, kā arī iegūtie Tērvetes un tās ielejas morfoloģiskie rādītāji.