Wyniki wyszukiwania - BazTech

1

Thermal stress and urban heat island effect in Jorhat urban environment as a result of changing land use and land cover

Neog Rituraj, Hazarika Jiten

Acta Geophysica

|

2022

|

Vol. 70, no 6

2771--2783

EN

The objective of the study is to determine the impact of land use and land cover (LULC) change on land surface temperature (LST) and thermal stress at Jorhat from 2009 to 2021. The experiment used Landsat TM (Thematic Mapper) for 2009 and OLI (Operational Land Imager)/TIRS (Thermal Infrared Sensor) for 2021 from earth.explorer.usgs.gov. Landsat data were employed to calculate the LST and LULC changes. Utilizing UTFVI (urban thermal field variance index), thermal stress over the ground surface has been computed. Thermal discomfort is computed simultaneously using the relative strain index (RSI) and net effective temperature (NET) index. Jorhat evidenced significant rise in built-up land to 281.25 hectares with reduced vegetation cover of 480.96 hectares from 2009 to 2021. These modifications caused significant rises in LST of 4.28 °C, 2.33 °C and 3.01 °C in September, October and December from 2009 to 2021. According to UTFVI from 2009 to 2021, Jorhat experienced declining ecologically excellent area with a rising proportion of ecologically worse land. In September and October 2009, the Jorhat city had just 10 days of bioclimatic discomfort and 19 days of bioclimatic comfort, as opposed to 24 and 10 days in 2021, respectively. Similarly, NET estimated 21 very hot days in October 2021, as opposed to just 9 days in 2009. Compared to 2009, there are now 6 and 4 days in December 2021 that are classified as warm or slightly hot, respectively. This leads to the conclusion that Jorhat's thermal condition is significantly impacted by changes in land use and land cover.

2

Calcium Carbonate Scale Formation, Prediction and Treatment (Case Study Gumry Oilfield-PDOC)

Saifelnasr A., Bakheit M., Kamal K., Lila A.

International Letters of Chemistry, Physics and Astronomy

|

2013

|

Vol. 12

47--58

EN

In this study the predictions and probabilities of calcium carbonate scale formation and corrosion occurrence inside Gumry Field Process Facilities (GFPF) and produced water injection process units (PWTP) was carried out. This was done calculating the Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI). The samples results for LSI index and PSI index were compared and found that all samples under threaten of calcium carbonate scale. The samples results for RSI index and found that all samples under formation of heavy calcium carbonate scale. Special excel computer program was designed to calculate the (LSI, RSI, PSI). The scale was cleaned and removed by 10 % diluted hydrochloric acid and commercial scale inhibitor.

3

Evaluation of selected biomechanical parameters in female team sports players

Pietraszewski B., Struzik A.

Acta of Bioengineering and Biomechanics

|

2013

|

Vol. 15, no. 4

103--108

EN

The aim of this research was to evaluate the biomechanical parameters of lower limbs and their influence on height of vertical jump. The research was conducted on a group of females practicing basketball and volleyball. The following equipment was used during the experiment: a force plate by Kistler, a Biometrics electrogoniometer and a specially designed chair to measure static torque by OPIW Opole. The results indicated that the jumping abilities of the examined athletes were poor. No statistically significant correlations were observed between knee static torque and heights of vertical jumps: CMJ and DJ. The authors suggest modification of the McClymont index (RSI) to evaluate the selection of platform height during plyometric training. Such modification would enable better choice of loads and better training control of the subject.

4

Changes of bioelectrical activity in cervical paraspinal muscle during gait in low and high heel shoes

Mika A., Oleksy Ł., Mikołajczyk E., Marchewka A., Mika P.

Acta of Bioengineering and Biomechanics

|

2011

|

Vol. 13, no. 1

27-33

EN

High heel footwear may be destructive for the spine because of an increased erector spinae muscle bioelectrical activity and increased ground reaction forces affecting lower limbs and the spine. The aim of this study was to evaluate the changes of bioelectrical activity in cervical paraspinal muscle during gait in low and in high heel shoes in different age groups. In 31 women aged 20-25 years and in 15 women aged 45-55 years without neck pain, the bioelectrical activity of the cervical paraspinal muscle was assessed during gait on flat surface with natural speed in three conditions: without shoes, in low (4 cm) and in high (10 cm) heel shoes. Higher bioelectrical activity cervical paraspinal muscle was noted during gait in high heel shoes in comparison to gait without shoes. The changes were more pronounced in the group of subjects aged 45-55 years. The prolonged wearing of shoes with stiletto type heels by individuals without neck pain is not safe for their spine and may lead to chronic paraspinal muscle fatigue.

5

Instrumenty zarządzania bezpieczeństwem infrastruktury drogowej

Michalski L.

Magazyn Autostrady

|

2006

|

Nr 10

36--39

PL

Jakość infrastruktury drogowej jest istotnym czynnikiem wpływającym na stan bezpieczeństwa ruchu drogowego i może mieć znaczący udział w realizacji celu przyjętego przez Radę i Komisję Europejską w 2001 roku – redukcji liczby zabitych o 50% do roku 2010. Podstawowym warunkiem realizacji takiego celu w odniesieniu do infrastruktury drogowej jest integracja myślenia o bezpiecznych drogach na etapie planowania, projektowania i eksploatacji dróg.

6

Regionalne systemy innowacyjne

Golińska-Pieszyńska M.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka

|

1999

|

z. 33

87-96

PL

Ujęcie innowacji jako procesu zintegrowanego i sieciowego, to tworzenie nowych rozwiązań technicznych i organizacyjnych oraz ich transfer a następnie zastosowanie w gospodarce. W systemie tym występują określone rozwiązania o charakterze instytucjonalnym, organizacyjnym, ekonomicznym oraz informacyjnym, które pozostają we wzajemnych relacjach i zależnościach, wpływające na przebieg transferu technologii oraz na poziom innowacyjności gospodarki. System innowacyjny może być rozważany na poziomie całej gospodarki bądź na poziomie regionalnym lub lokalnym. W pierwszym przypadku przyjmuje się określenie Krajowy System Innowacyjny (KSJ), a w drugim Regionalny System Innowacyjny (RSI).

EN

In comparison with the OECD countries, the Polish economy's innovation profile is rather low. This poses a threat to the international competitiveness of our economy and domestic companies. The development of regional innovation and technology transfer support institutions in Poland - such as innovation centres, incubators, or information centres, etc. - is only in its initial phase. The European countrie's experience shows that the process of Regional Innovation Centres development is time-consuming and requires continues application of mature regional policies. This study was to present the complexity of innovation-related issues, hit a specific focus on Regional and National Innovation Systems which in the future will certainly contribute to the growth of Polish companies' competitive profile on international markets and, consequently, improve the general competitiveness of our economy.

7

Prediction of Musculoskeletal Discomfort in a Pick and Place Task (A pilot study)

Kruizinga C. P., Delleman N. J., Schellekens J. M. H.

International Journal of Occupational Safety and Ergonomics

|

1998

|

Vol. 4, No. 3

271--286

EN

A pilot study was conducted regarding the effects of working posture, handling frequency, and task duration on musculoskeletal discomfort. Participants rated their discomfort perceived while performing a repetitive task at 8 different combinations of manipulations. Pauses between the work periods lasted 15 min. Discomfort was rated according to Borg’s category-ratio scale CR-10 and postures were recorded by an optoelectronic movement registration system. From linear multiple regression analysis equations for predicting discomfort at various body regions were obtained. Coefficients of determination especially point to trunk inclination and handling frequency as major determinants of musculoskeletal discomfort.