Search results for " freezing"
showing 10 items of 14 documents
Conflitti tra azioni esecutive civili e sequestri disposti dal giudice penale
2016
Lo scritto esamina le conseguenza prodotte dai sequestri penali sul patrimonio responsabile del debitore, al fine di approfondire la posizione dei creditori, che vorrebbero sui beni oggetto di sequestro penale. The essay deal with the consequences of penal freezing of the debtor's asset, with regard of the creditors' right to seize the debtor's assets to satisfy their rights.
Identifying conserved genes involved in crop tolerance to cold stress
2022
Low temperature is a limiting factor for crop productivity in tropical and subtropical climates. Cold stress response in plants involves perceiving and relaying the signal through a transcriptional cascade composed of different transduction components, resulting in altered gene activity. We performed a meta-analysis of four previously published datasets of cold-tolerant and cold-sensitive crops to better understand the gene regulatory networks and identify key genes involved in cold stress tolerance conserved across phylogenetically distant species. Re-analysing the raw data with the same bioinformatics pipeline, we identified common cold tolerance-related genes. We found 236 and 242 common…
A Generalised RBF Finite Difference Approach to Solve Nonlinear Heat Conduction Problems on Unstructured Datasets
2011
Radial Basis Functions have traditionally been used to provide a continuous interpolation of scattered data sets. However, this interpolation also allows for the reconstruction of partial derivatives throughout the solution field, which can then be used to drive the solution of a partial differential equation. Since the interpolation takes place on a scattered dataset with no local connectivity, the solution is essentially meshless. RBF-based methods have been successfully used to solve a wide variety of PDEs in this fashion. Such full-domain RBF methods are highly flexible and can exhibit spectral convergence rates Madych & Nelson (1990). However, in their traditional implementation the fu…
Endometriosis and strategies of fertility preservation: a systematic review of the literature.
2019
Endometriosis is a common chronic inflammatory disorder, often causing both pain and infertility. It is estimated that 25-50 % of patients undergoing fertility treatments have had endometriosis as it involves an impairment of the ovarian reserve. For these reasons, endometriosis has been highlighted as a condition that may require a fertility preservation procedure, while being benign in nature. The aim of this review is to summarize the current evidence on fertility preservation techniques for patients affected by endometriosis, focusing on the main characteristics of the different approaches. A systematic review of literature was performed by searching in the main electronic databases (ME…
Analysis of Air Cycle and Efficiency Evaluation for a Blast Freezing Tunnel Plant
2013
Air refrigerating systems offer a suitable alternative to vapour compression systems. Air can be used as working fluid in gas compression cycles for refrigeration, air conditioning and heat pump systems. This paper gives some results of theoretical investigation into improved air cycles for refrigeration systems and a comparison is made with their performances. The case-study relates to a dual purpose refrigerating plant. A blast freezing tunnel gives the coldest air stream and, in cascade, the air coming out from the tunnel is used in a channel network for feeding a lot of chilling cells. The case-study analysed indicates that there is a real possibility to build plants which will be equip…
Homogeneous freezing of single sulfuric and nitric acid solution drops levitated in an acoustic trap
2009
Abstract The freezing temperatures of single supercooled drops of binary and ternary sulfuric and nitric acid solutions were measured while varying the acid concentration. An acoustic levitator was used which allows to freely suspend single solution drops in air without electrical charges thereby avoiding any electrical influences which may affect the freezing process. The drops of typically 500 µm in radius were monitored by a video camera during cooling cycles down to − 85 °C to simulate the upper tropospheric and stratospheric temperature range. The present data confirm that liquid solution droplets can be supercooled far below the equilibrium melting point by approximately 35 °C. They f…
Freezing and storage at -20 °C provides adequate preservation of Toxoplasma gondii DNA for retrospective molecular analysis.
2014
Equipe EA MERS; International audience; Nucleic acid-based testing has become crucial for toxoplasmosis diagnosis. For retrospective (forensic or scientific) studies, optimal methods must be employed for DNA long-term storage. We compared Toxoplasma gondii detection before and after DNA storage using real-time PCR. No significant differences were found depending on duration or storage conditions at -20 °C or -80 °C.
Optimised lyophilisation-based method for different biomolecule single-extractions from the same rat brain sample: Suitability for RNA and protein ex…
2019
Abstract Background Optimisation of tissue processing procedures in preclinical studies reduces the number of animals used and allows integrated multilevel study in the same sample. Multiple extraction of different biomolecules from the same sample has several limitations. New method Using brain samples from rats subjected to ischemic stroke, we combined lyophilisation of flash-frozen tissue, mechanical pulverisation and cryopreservation in a method to optimise tissue handling and preservation for independent RNA or protein single-extract methods, and subsequent RT-qPCR or Western blot analyses. Results Lyophilisation resulted in 70% tissue weight loss. RNA (OD260/280∼1.8) and protein yield…
Cold recovery during regasification of LNG part one: Cold utilization far from the regasification facility
2010
The paper deals with cold recovery during LNG regasification. The applications analyzed pertain to the use in deep freezing agro food industry and in space air conditioning facilities in commercial sector (Supermarkets and Hypermarkets) of cold recovered from the regasification process. A modular LNG regasification unit is proposed having the regasification capacity of 2 billion standard cubic meters/year of gas and it is based on use of a Power Cycle working with Ethane, this unit allows operation of cold energy transfer, contained in LNG to be regasified, in a range of temperatures suitable for multipurpose use of cold, reducing regasification process irreversibility. Some electric energy…
Seasonality of sheep milk freezing point and relationship with other chemical and physical milk parameters
2017
Milk freezing point (FP) is an important quality indicator which can be used for determination of possible adulteration of the milk with water. The aim of this study was to evaluate the influence of seasonality on ewe FP produced in Sicily during the last 10 years of investigation. A total of 1,996 samples of raw bulk ewes’ milk were collected from 295 dairy factories located in western Sicily (Italy). The average of the FP during the entire period of investigations was -0.560 °C ± 0.013 °C. The seasonality of milk FP showed that at the beginning of lactations (September) the FP was -0.554°C, than it decreased up to December (-0.561°C). Successively, FP increases until the end of lactations…