4,965 research outputs found
Predicting seed germination of safflower (Carthamus tinctorius) cultivars using hydrotime model
No full textSafflower (Carthamus
tinctorius) is a highly branched, herbaceous,
thistle-like annual plant. It is commercially
cultivated for vegetable oil extracted from
the seeds, which is cultivated under arid
environments. In such environments, the
water needed for germination is available
for only a short time and, consequently,
successful crop establishment depends not
only on rapid and uniform germination of
the seedlot, but also on its ability to
germinate under low water availability. All
of these attributes can be analyzed through
the hydrotime model (HT). Safflower seeds
were germinated in various polyethylene
glycol (PEG 600) solutions to obtain water
potentials of 0, -0.2, -0.4, -0.6, and -0.8
Mpa. Results indicated that germination of
safflower cultivars decreased significantly
with reduction of osmotic potential. The
highest germination percentage for Sina
(93.06 and 94.02%), Faraman (93.52 and
95.33%), Talaei (94.98 and 93.98%) and
Kouseh (93.58 and 95.55%) cultivars were
attained from distilled water (0 MPa) and
-0.2 MPa, respectively. The hydrotime
constant (θH) for Sina, Faraman, Talaei and
Kouseh cultivars were 0.93, 0.84, 0.78 and
0.72 MPa d, and the water potential (Ψb(50))
for Sina, Faraman, Talaei and Kouseh
cultivars were -0.56, -0.67, -0.64 and -0.77
MPa, respectively. Cumulative germination
of safflower seed was higher in Kouseh
cultivar, than in Sina, Faraman and Talaei
cultivars. Results showed that, hydrotime
model is suited to predicting seed
germination of safflower seeds. In addition,
the information gathered with this work
allows us to build mathematical models to
predict germination of safflower cultivars in
the field under various environments
Predicting Seed Germination of Safflower (Carthamus Tinctorius) Cultivars Using Hydrotime Model
No full textAbstract
Safflower (Carthamus tinctorius) is a highly branched, herbaceous, thistle-like annual plant. It is commercially cultivated for vegetable oil extracted from the seeds, which is cultivated under arid environments. In such environments, the water needed for germination is available for only a short time and, consequently, successful crop establishment depends not only on rapid and uniform germination of the seedlot, but also on its ability to germinate under low water availability. All of these attributes can be analyzed through the hydrotime model (HT). Safflower seeds were germinated in various polyethylene glycol (PEG 600) solutions to obtain water potentials of 0, -0.2, -0.4, -0.6, and -0.8 Mpa. Results indicated that germination of safflower cultivars decreased significantly with reduction of osmotic potential. The highest germination percentage for Sina (93.06 and 94.02%), Faraman (93.52 and 95.33%), Talaei (94.98 and 93.98%) and Kouseh (93.58 and 95.55%) cultivars were attained from distilled water (0 MPa) and -0.2 MPa, respectively. The hydrotime constant (θH) for Sina, Faraman, Talaei and Kouseh cultivars were 0.93, 0.84, 0.78 and 0.72 MPa d, and the water potential (Ψb(50)) for Sina, Faraman, Talaei and Kouseh cultivars were -0.56, -0.67, -0.64 and -0.77 MPa, respectively. Cumulative germination of safflower seed was higher in Kouseh cultivar, than in Sina, Faraman and Talaei cultivars. Results showed that, hydrotime model is suited to predicting seed germination of safflower seeds. In addition, the information gathered with this work allows us to build mathematical models to predict germination of safflower cultivars in the field under various environments.</jats:p
Dredging Processes I: The Cutting of Sand, Clay & Rock - Theory
No full textThis book gives an overview of cutting theories. It starts with a generic model, which is valid for all types of soil (sand, clay and rock) after which the specifics of dry sand, water saturated sand, clay, rock and hyperbaric rock are covered. For each soil type small blade angles and large blade angles, resulting in a wedge in front of the blade, are discussed. The failure mechanism of sand, dry and water saturated, is the so called Shear Type. The failure mechanism of clay is the so called Flow Type, but under certain circumstances also the Curling Type and the Tear Type are possible. Rock will usually fail in a brittle way. This can be brittle tensile failure, the Tear Type, for small blade angles, but it can also be brittle shear failure, which is of the Shear Type of failure mechanism for larger blade angles. Under hyperbaric conditions rock may also fail in a more ductile way according to the Flow Type of failure mechanism. For each case considered, the equations/model for the cutting forces, power and specific energy are given. The models are verified with laboratory research, mainly at the Delft University of Technology, but also with data from literature.Marine & Transport TechnologyMechanical, Maritime and Materials Engineerin
Work among Japanese in the Salt River Valley of Arizona
No full textDocument written by S.A. Stewart Resident Missionary, East Kyushu Distict, Japan Methodist Church. Stewart discusses the events at the church and the free and restricted zones for Japanese Americans living in Glendale and Phoenix, Arizona.The Bishop James Chamberlain Baker Collection includes letters, documents, and articles about Japanese Americans during World War II. Subjects in the collection include Japanese Americans mass removal, Pearl Harbor and the aftermath, religion, and support from the non-Japanese American community. The collection was digitized and made accessible online by CSUDH Gerth Archives and Special Collections
Role of melatonin receptors in spatial learning of rats exposed to continuous light
No full textBackground and Aim: During critical period of mammal's CNS development, interaction of genetic and experience driven processes affects almost their all behaviors in adolescence. The aim of this study was to assess interaction of melatonin and its antagonist, Luzindole on the spatial learning and memory of the rats Morris Water Maze (MWM) exposed to continuous light. Material and Methods: This experimental study included sixty 45-day-old male rats which were randomly allocated in two groups; control group went through cycles of 12 hours in light/12 hours in dark from birth to the end of the study and the light exposed group was reared in light. Each group also, had 3 subgroups: control, receiving melatonin and receiving luzindole (n=10 for every group). Using MWM, the animals learning and memory was tested for 5 days. Results: Our results indicated that in the learning phase, the light exposed animals spent more time to find the hidden platform than the control group. Luzindole improved the learning ability in light exposed animals. Melatonin also, slackens the spatial learning of the control animals. luzindole improved spatial learning of the light exposed rats. Light exposure and melatonin had no effect on the memory of these animals. Luzindole only caused a disturbance in spatial memory of the rats in the control group. Conclusion: Light exposure and melatonin impair rat's spatial learning. Non of these two interventions influenced spatial learning of the rats
Sensory experience differentially underlies developmental alterations of LTP in CA1 area and dentate gyrus
No full textPostnatal development of the brain relies on genetic codes and sensory inputs. The hippocampus, a well-known area of the brain involved in learning and memory, receives indirect sensory signals through the entorhinal cortex. Stimulating perforant path (PP) excitatory postsynaptic potentials (EPSPs) were recorded in dentate gyrus (DG) and CA1 area of hippocampus of the light (LR) and dark (DR) reared rats at 2 (2W), 6 (6W) and 10 weeks (10W) of postnatal age. Then, the PP was tetanized to induce LTP in both sites of recording. We found a developmental decrease in the amplitude of baseline EPSPs in either DG or CA1 area in the LR rats; opposite was the case in their DR counterparts. Potentiation level in both the CA1 and DG was lower in the DR compared to LR animals. Also, the magnitude of LTP was site-dependent where the degree of LTP was considerably higher in the CA1 compared to the DG in either LR or DR rats. We concluded that: (a) visual signals are necessary for setting the basic activity of hippocampus to mature status, (b) visual deprivation negatively influences NMDA receptor-dependent hippocampal plasticity, (c) the CA1 and DG similarly respond to the sensory deprivation and (d) generally, LTP is weaker in the DG; irrelevant to degree of visual inputs to brain. © 2013 Elsevier B.V
TP S.A.) (Umowa spoleczna - narzedzie transformacji czy recepta na kryzys? (TP S.A.)
No full textThe author presents the path to the signing of a Social Contract for the years 2009-2011 by all eighteen trade unions active at 'Telekomunikacja Polska S.A. The Contract defines the most important elements of employment policy and worker development, including a plan for the restructuring of the company and voluntary resignation for compensation on the part of the employe
The mining rescure in SRK S.A. – economics and busines
No full textArtykuł podejmuje problematykę ratownictwa górniczego w Polsce w kontekście likwidowanych zakładów górniczych. Na podstawie wybranych przepisów górniczych autor wyjaśnia zasady funkcjonowania ratownictwa przedsiębiorcy i podmiotów zawodowo trudnią-cych się ratownictwem górniczym. Opisuje organizację ratownictwa górniczego w Polsce oraz kompetencje poszczególnych podmiotów w tym zakresie. Przedstawia także etapy tworzenia ratownictwa górniczego w spółce SRK S.A. oraz elementy analizy ekonomicznej związanej z kosztami utrzymania Stacji Ratownictwa Górniczego SRK S.A. Artykuł porusza również problem społeczny związany z próbą przejęcia przez Centralną Stację Ratownictwa Górniczego S.A. w Bytomiu pełni zabezpieczenia w zakresie ratownictwa górniczego 12 oddziałów SRK S.A. w których nadal prowadzone są roboty podziemne. W podsumowaniu autor opisuje paradoksy tego przedsięwzięcia.The article discusses aspect of the mining rescue in Poland in the context of liquidated mining plants. On the basis of selected mining regulations, the principles of the rescue operation of an operator as well as of professional mining rescue workers has been explained. This paper describes the organization of the mining rescue in Poland and the competences of individual entities included in this entity. Described have been also the stages of organizing the mining rescue in SRK S.A. and elements of economic analysis of maintenance costs in SRK S.A. Rescue Station. The article also undertakes the social problem related to the attempted takeover by the Central Mining Rescue Station S.A. in Bytom full security of twelve departments of the mining rescue SRK S.A. where underground works are still being carried out. As a summary the author faces with the paradoxes of this situation
Equity research - Kering S.A.
No full textMestrado em FinançasEquity research a Kering S.A com o intuito de determinar um determinado price target para o valores das acções da Kering S.A a 31 de Dezembro de 2019.
No processo para determinar o price target foram utilizados 3 modelos de avaliação distintos, Discounted Cash Flow Model, Dividend Discount Model e Multiples Valuation dos quais se obteve um price target de 576.44 EUR representando um upside de 8.9% face ao preço base utilizado para esta analise de 520.10 EUR de 1 de Julho de 2019.This project is mainly comprised on an Equity Research of Kering S.A. to determine a certain price target of Kering's stock by 31st December 2019. This assessment is mostly assembled by a set of assumptions, made the author of these document, for the time period of 2019F-2023F which reflect the historical performance of the company and the current market settings that may impact such target price.
In regards of the computations around the price target definition, three valuation models were covered, the Discounted Cash Flow Model, which discounted all future cash flows generated in the period under analysis and through perpetuity, totaling a price of 580.12 EUR / share, and the Dividend Discount Model and Multiples Valuation Model which totaled 567.00 EUR and 582.22 EUR respectively. Based on these there valuation models, by assigning an equal weight to each one of them, a price target of 576.44 EUR was reached translating into a 8.9% upside potential regarding the reference date of analysis of 525.10 EUR in 1st July 2019.
Once, computed the price target, the final recommendation for these equity research document was defined based on the risk criteria that better described Kering S.A market environment settings, providing this way a solid statement for Kering's share price within the period under analysisinfo:eu-repo/semantics/publishedVersio
Equity research - Kering S.A.
No full textMestrado em FinançasEquity research a Kering S.A com o intuito de determinar um determinado price target para o valores das acções da Kering S.A a 31 de Dezembro de 2019.
No processo para determinar o price target foram utilizados 3 modelos de avaliação distintos, Discounted Cash Flow Model, Dividend Discount Model e Multiples Valuation dos quais se obteve um price target de 576.44 EUR representando um upside de 8.9% face ao preço base utilizado para esta analise de 520.10 EUR de 1 de Julho de 2019.This project is mainly comprised on an Equity Research of Kering S.A. to determine a certain price target of Kering's stock by 31st December 2019. This assessment is mostly assembled by a set of assumptions, made the author of these document, for the time period of 2019F-2023F which reflect the historical performance of the company and the current market settings that may impact such target price.
In regards of the computations around the price target definition, three valuation models were covered, the Discounted Cash Flow Model, which discounted all future cash flows generated in the period under analysis and through perpetuity, totaling a price of 580.12 EUR / share, and the Dividend Discount Model and Multiples Valuation Model which totaled 567.00 EUR and 582.22 EUR respectively. Based on these there valuation models, by assigning an equal weight to each one of them, a price target of 576.44 EUR was reached translating into a 8.9% upside potential regarding the reference date of analysis of 525.10 EUR in 1st July 2019.
Once, computed the price target, the final recommendation for these equity research document was defined based on the risk criteria that better described Kering S.A market environment settings, providing this way a solid statement for Kering's share price within the period under analysisinfo:eu-repo/semantics/publishedVersio
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