Search results for "riga"

Some Previously Relevant Aspects of Academic Life: Venia Legendi and the Status of a Private Docent in the World and in Riga Polytechnicum (1862–1896)

2021

The study examines the status of a private docent, the academic position which was introduced across the world in the 18th century and which also existed in Latvia from the second half of the 19th century until the end of World War II. The status of the private docent as it used to be understood in Latvia is compared with other countries, mainly considering German-type universities. Definition of the terms «venia legendi» and «private docent» providing examples of academic activity of the lecturers of Riga Polytechnicum (RP) allow considering these concepts from various perspectives in order to make their meaning and usage in the previous centuries transparent for the users in the 21st cent…

Prospective Cancer Therapies Using Stimuli‐Responsive DNA Nanostructures

2021

Financial support by the Emil Aaltonen Foundation, the Sigrid Jusélius Foundation, the Magnus Ehrnrooth Foundation, Academy of Finland (grants no. 317042 and 331151), the Jane and Aatos Erkko Foundation and the Vilho, Yrjö and Kalle Väisälä Foundation of the Finnish Academy of Science and Letters is gratefully acknowledged Nanostructures based on DNA self-assembly present an innovative way to address the increasing need for target-specific delivery of therapeutic molecules. Currently, most of the chemotherapeutics being used in clinical practice have undesired and exceedingly high off-target toxicity. This is a challenge in particular for small molecules, and hence, developing robust and ef…

Biomolecular characterization of wild sicilian oregano: phytochemical screening of essential oils and extracts, and evaluation of their antioxidant a…

2013

An extensive survey of wild Sicilian oregano was made. A total of 57 samples were collected from various sites, followed by taxonomic characterization from an agronomic perspective. Based on morphological and production characteristics obtained from the 57 samples, cluster analysis was used to divide the samples into homogeneous groups, to identify the best biotypes. All samples were analyzed for their phytochemical content, applying a cascade-extraction protocol and hydrodistillation, to obtain the non volatile components and the essential oils, respectively. The extracts contained thirteen polyphenol derivatives, i.e., four flavanones, seven flavones, and two organic acids. Their qualitat…

Disciplinar-Vorschriften für die Schüler der Vorbereitung - Shule des Polytechnicums zu Riga

1875

Von Sr. Erlaucht, dem Herrn Curator mittelst Rescripts vom 15. Januar 1875 Nr. 72 bestätigt.

Die Anlage eines Freihafens für Riga

1910

Grāmatas izdošanas gads nav zināms.

Positive pressure irrigation (PPI) vs. passive ultrasonic irrigation (PUI), analysis to reduce vapour lock effect. Sistematic review and meta-analysis

2018

PROCESSES OF FORMATION OF TERRITORIAL COMMUNITIES IN RIGA

2013

Elektroniskā versija nesatur pielikumus

Irrigation and Political Power in the Medieval Kingdom of Valencia

2018

The medieval Kingdom of Valencia (Spain) was a European feudal society born in the thirteenth century out of the military conquest of the east of al-Andalus by the Crown of Aragon. This work focuses on the social organization of irrigation institutions in the thirteenth, fourteenth, and fifteenth centuries, which replaced the water management systems in use during the Andalusi period. The study analyzes the three types of water-governance systems in operation: irrigation systems managed by royal officials, irrigation systems managed by municipalities, and irrigation systems managed by corporations of autonomous farmers. The chapter also examines the different royal and municipal officials t…

Effects of precipitation seasonality, irrigation, vegetation cycle and soil type on enhanced weathering – modeling of cropland case studies across fo…

2022

Enhanced weathering (EW) is a promising strategy for carbon sequestration, but several open questions remain regarding the actual rates of dissolution in conditions of natural hydroclimatic variability in comparison to laboratory experiments. In this context, models play a pivotal role, as they allow exploring and predicting EW dynamics under different environmental conditions. Here a comprehensive hydro-biogeochemical model has been applied to four cropland case studies (i.e., Sicily and the Padan plain in Italy and California and Iowa in the USA) characterized by different rainfall seasonality, vegetation (i.e., wheat for Sicily and California and corn for the Padan plain and Iowa), and s…

Essential oils as natural preservatives for bakery products: Understanding the mechanisms of action, recent findings, and applications

2018

Bakery products, as an important part of a healthy diet, are characterized by their limited shelf-life. Microbiological spoilage of these products not only affects the quality characteristics and result in the economic loss but also threatens consumer's health. Incorporation of chemical preservatives, as one of the most conventional preserving techniques, lost its popularity due to the increasing consumer's health awareness. Therefore, the bakery industry is seeking alternatives to harmful antimicrobial agents that can be accepted by health-conscious customers. In this regard, essential oils have been previously used as either a part of product ingredient or a part of the packaging system. …