scholarly journals SPRAY APPLICATIONS TO TOMATO PLANTS IN GREENHOUSES. PART 2: EFFECT OF SPRAY LANCE TYPE

2009 ◽  
Vol 40 (3) ◽  
pp. 49 ◽  
Author(s):  
Emanuele Cerruto ◽  
Giuseppe Emma ◽  
Giuseppe Manetto

The present paper reports the results of some spray application trials carried out in a greenhouse with full developed tomato plants to assess foliar deposition, ground losses, and dermal operator exposure when using handheld high pressure spray lances and when walking backwards during treatments. Two spray lance types (conventional with one nozzle and Yamaho C-6 with two steel nozzles, each with two orifices) and two working pressures (10 and 20 bar) were taken into consideration. An experimental design with two factors (spray lance and pressure) was adopted, arranged according to a randomised block design with three replicates. Volume application rates ranged from 775 up to 1252 L/ha, but all data were normalised to 1000 L/ha. The results showed no statistically significant differences in the mean foliar deposition between the two spray lances and the two working pressures. However, the higher pressure improved significantly the deposit into the internal layer of the canopy (+57%), whereas the Yamaho C-6 spray lance produced a higher deposit on the external layer at any pressure. The greatest differences between external and internal layer were mainly concentrated in the middle and high parts of the canopy, where there were 55 007_Cerruto(557)_49 18-11-2009 11:59 Pagina 55 the highest values of LAI and number of foliar layers. The fraction of the applied volume rate on the ground was on average 25 percent and it was affected only by the pressure value: it increased from 21.7 to 28.7 percent when the pressure increased from 10 to 20 bar, due mainly to the contribution of the conventional spray lance under the sprayed twin-rows. Finally, neither pressure nor spray lance type affected significantly the dermal operator exposure. Upper limbs accounted for 51 percent of the total exposure, while trunk and lower limbs accounted for 24 percent each. The body parts more exposed were the left arm and the hands, but also relatively high was the deposit on the respirator, so operators should ever wear appropriate personal protective equipment.

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3771
Author(s):  
Alexey Kashevnik ◽  
Walaa Othman ◽  
Igor Ryabchikov ◽  
Nikolay Shilov

Meditation practice is mental health training. It helps people to reduce stress and suppress negative thoughts. In this paper, we propose a camera-based meditation evaluation system, that helps meditators to improve their performance. We rely on two main criteria to measure the focus: the breathing characteristics (respiratory rate, breathing rhythmicity and stability), and the body movement. We introduce a contactless sensor to measure the respiratory rate based on a smartphone camera by detecting the chest keypoint at each frame, using an optical flow based algorithm to calculate the displacement between frames, filtering and de-noising the chest movement signal, and calculating the number of real peaks in this signal. We also present an approach to detecting the movement of different body parts (head, thorax, shoulders, elbows, wrists, stomach and knees). We have collected a non-annotated dataset for meditation practice videos consists of ninety videos and the annotated dataset consists of eight videos. The non-annotated dataset was categorized into beginner and professional meditators and was used for the development of the algorithm and for tuning the parameters. The annotated dataset was used for evaluation and showed that human activity during meditation practice could be correctly estimated by the presented approach and that the mean absolute error for the respiratory rate is around 1.75 BPM, which can be considered tolerable for the meditation application.


2013 ◽  
Vol 5 (3) ◽  
pp. 545-553 ◽  
Author(s):  
M. G. Sarower ◽  
S. Bilkis ◽  
M. A. Rauf ◽  
M. Khanom ◽  
M. S. Islam

The biochemical composition (proteins, lipid, ash and moisture) of different parts of the body (gill, meat, egg) of fattened and natural mud crab Scylla serrata was determined. Twenty four samples of S. serrata (12 from wild & 12 from fattening farm) of different sizes and sexes (half of the sample is male) were used in this study. The mean protein and lipid contents are significantly (p<0.05) higher in fattened crabs than natural in natural crabs regardless of size and sexes.  Moisture and ash were higher in natural crab than in fattened ones. The highest and lowest moisture content was noticed in gills and eggs in both natural and fattened crabs. Protein and lipid contents were comparatively higher in eggs than in other body parts. Female crabs contained high protein and lipid than males in both natural and fattened crabs.  From the results of this study it may considered that fattened crab might be comparatively superior to natural crabs as they appear to provide higher levels of protein and fat  for human nutrition. Keywords: Biochemical composition; Natural and Fattened mud crab; Scylla serrata   © 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi: http://dx.doi.org/10.3329/jsr.v5i3.14082 J. Sci. Res. 5 (3), 545-553 (2013)


2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Alhassan Bawa

Background and Objective. Maize is one of the oldest cultivated crops. It is the third most important cereal after wheat and rice globally. Compared to all other cereals, maize has the highest average yield per unit area. The objective of the research was to evaluate maize varietal response to different nitrogen fertilizer rates. Materials and Methods. The treatment consisted of two factors, namely six varieties of maize and four levels of nitrogen application rates. These were arranged in 6 × 4 factorial combinations and laid out using randomized complete block design (RCBD) with three replications. The data collected were subjected to combined analysis for variation in factorial experiments in RCBD using Genstat statistical package edition 18. The means were separated using Duncan’s multiple range test at a 5% probability level. Results. The study revealed that varieties, such as IWD-C3-SYN-F2 and OBATAMPA, produced the highest grain yield and growth parameters (agronomic traits) relative to other varieties. The maximum grain yield and biomass production also occurred at the nitrogen application rates of 90 and 120 kg N/ha. Conclusion. Varieties, such as IWD-C3-SYN-F2 and OBATAMPA, and N rate of 90 kg N/ha are, therefore, recommended to be used for maize production by the resource-poor farmers in the Guinea Savanna Agro-Ecology of Ghana.


2020 ◽  
Vol 8 (1) ◽  
pp. 18
Author(s):  
Ni Ketut Gitariastuti ◽  
Sri Mulyani ◽  
Luh Putu Wrasiati

Body scrub is a product that works to remove dead skin cells and open pores so the skin becomes brighter and whiter. This study aims to determine the effect of the moringa leaf powder addition and heating process temperature on the characteristics of body scrub and determine the percentage of the addition of moringa leaf powder and the best heating process temperature to produce a body scrub. This study uses a randomized block design with two factors. The first factor is the percentage addition of moringa leaf powder and the second factor is the temperature of the heating process. The first factor consists of 3 levels namely 4, 5 and 6% while the second factor consists of 2 levels namely 65oC and 70oC. The results of the study at the 6th week of storage showed that the addition of moringa leaf powder affected viscosity, spreadability power and adhesion power but did not affect the pH and overall acceptance of the body scrub. The temperature of the heating process does not affect the pH, viscosity, spreadability power, adhesion power and overall acceptance of the body scrub. Addition of 4% of moringa leaf powder and 65oC of the heating process temperature was the best treatment for body scrub with characteristics at the 6th week of storage as follows: pH 4.8, viscosity 10307 cp, spreadability power 5.2 cm, adhesion power 36.75 seconds and separation ratio = 1. Keywords: body scrub, moringa leaf, heating process temperature


2019 ◽  
Author(s):  
Yasushi Ota ◽  
Ryoga Kuriyama

In baseball, pitchers have a central role and high-speed pitching is desirable. So far, several studies of the physical factors related to pitching form with the aim of improving the speed of pitched balls have been conducted. In this study, we used a motion capture to acquire three-dimensional (3D) time series data related to the speed of pitched balls and performed a kinetics analysis by using these acquired data. The acquired data were divided into five pitching phases: wind up, early cocking, late cocking, acceleration, and follow through. Our analysis identified the body parts that contribute to increasing the speed of pitched balls, i.e., the speed of rotation of individual joints and the timing/phase when power can be applied. Especially, by examining joint angular velocity and joint force, we showed that the speed of pitched balls is determined by the action of the upper limbs as well as the coordinated action of the whole body, particularly the lower limbs and the trunk.


2020 ◽  
Vol 8 (3) ◽  
pp. 472
Author(s):  
Kadek Mei Ahadianti ◽  
Luh Putu Wrasiati ◽  
Gusti Putu Ganda Putra

Body scrub cream is a semi-solid dosage form containing one or more dissolved or dispersed medicinal ingredients in suitable base ingredients and serves to smooth the body's skin and remove damaged skin cells with the help of scrub material. Oyong fiber (Luffa acutangula) is used as a scrubber material that is natural, biodegradable and inexpensive. The aim of this study to know the effect of the addition of oyong fiber powder and stirring time to the characteristics of body scrub cream and to determine the percentage of the addition of oyong fiber powder  and length of stirring to produce the best body scrub cream. This research uses factorial randomized block design with two factors. The first factor is the percentage of the addition of the Oyong fiber powder consisting of 3 levels namely 5, 7, 9 and 11% and the second factor is the stirring time consisting of 10, 15, and 20 minutes. Data were analyzed by analysis of variance and continued by Tukey's test. The results of the study showed that the addition loofah (Luffa acutangula) fiber powder addition and the stirring time very affected the pH, viscosity, spreadability power, adhesion power and overall acceptance of the body scrub cream. The interaction between the addition loofah (Luffa acutangula) fiber powder addition and the stirring time very affected the viscosity and the spreadability power.  Addition of 9% of loofah (Luffa acutangula) fiber powder and 20 minutes of the stirring time was the best treatment for body scrub cream with characteristics as follows: pH 4.60, viscosity 37600 cp, homogeny, spreadability power 4.6 cm, adhesion power 9.88 seconds, separation ratio=1 and overall acceptance 5,90 (rather like to like). Keywords : body scrub cream, Luffa acutangula, stirring time


2003 ◽  
Vol 21 (3) ◽  
pp. 430-432 ◽  
Author(s):  
Carlos Gilberto Raetano ◽  
Marco Roberto Kobayashi ◽  
Wagner Roberto Kuwahara ◽  
Rodrigo R. Vinchi

Thrips is one of the most important vector species of the tomato spotted wilt tospovirus (TSWV) in Brazil. Two different pesticide application methods, drench x spray, using thiamethoxam were compared with commonly used insecticides for thrips control in tomato plants, Debora Plus. The experimental design consisted of a complete randomized block design with seven treatments and four replicates. Dosages of 150 and 200 g of a.i. per ha were used in just one drench application and 50 g of a.i. ha-1 sprayed, at weekly intervals, 48 days after sowing. The control efficacy of thiamethoxam was compared to diafenthiuron (400 g of a.i. ha-1), profenofos + cypermethrin (320+32 g of a.i. ha-1, respectively) and methamidophos (60 g of a.i. per hectolitre of water) in spray application. Cumulative number of plants with tospoviruses and the F. schultzei population from ten flowers per plot were registered. The mean cumulative number of plants with tospoviruses among treatments was not significantly different. No significant difference between thiamethoxam application methods and dosages on F. schultzei control, 24 days after application, were observed for thrips population. One drench application of higher dosages of thiamethoxam proved to be more environmentally advantageous than the pesticide applied at dosages of 50 g of a.i. ha-1 at weekly intervals. The vector control efficacy of thiamethoxam varied from 93 to 95%, independently of the application method and dosages. Diafenthiuron and profenofos + cypermethrin showed less efficacy (78 and 88%, respectively) but greater than those with methamidophos (71%). The products and dosages tested did not cause phytotoxicity in tomato leaves.


2009 ◽  
Vol 40 (3) ◽  
pp. 41 ◽  
Author(s):  
Emanuele Cerruto ◽  
Giuseppe Emma ◽  
Giuseppe Manetto

The present paper reports the results of some spray application trials carried out in two tomato greenhouses to assess foliar deposition, ground losses, and dermal operator exposure when using hand-held highpressure spray lances. Two operating ways (forward vs. backwards operator movement) and two different plant vegetative stages (pre-production vs. full development) were taken into consideration. An experimental design with one factor (the operator walking direction) was adopted, arranged according to a randomised block design with three replicates. Volume application rates were settled according to the plant development: 900 L/ha in pre-production stage and 1800 L/ha at full development stage. The results showed no statistically significant differences in the mean foliar deposition between the two walking directions in both development stages. The greatest differences among the sampling locations were observed in pre-production stage, when, due to the spraying technique (spray jet directed from top to bottom), the foliar deposits in the low part of the canopy were much lower than those in the middle and high part. Also ground losses were unaffected by walking direction: they ranged on average from 14.3% to 23.5% of the applied volume rate. Finally, the dermal operator exposure was greatly affected by walking direction: at full development stage, it was 8 times higher walking forward than walking backwards. So, this simple change in field practice can noticeably improve the operator safety, without penalising working capacity and quality of deposition.


2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Muhammad Syaifuddin ◽  
Maretania Devi Maya Santi ◽  
Prasetyo Catur Utomo

Background : Amputation is defined as the act of separating parts of the body in part or all parts of the extremities. Clients post amputation of the lower limbs report social discomfort associated with changes in body image due to the presence of missing body parts and ultimately affect the appearance both psychologically and physically. Transtibial Prosthesis is an intervention in the form of a prosthesis which is paired outside the body in order to restore lost limb shape and can replace the function anatomically and functionally. In this study conducted a test to determine the effect of the  use  of  transtibial  prosthesis  to  the  patient's  body  image  after  transtibial amputation. Method : This study is Quasy Experimental with one group pre and post test design. The subjects had used transtibial prosthesis from APOC Clinic, Boyolali, Central Java. The  location this study in Surakarta. Subjects of this study is 17 people Result : there is an effect of the use of transtibial prosthesis in the form of improved body image for patients post transtibial amputation (wilcoxon test is 0,000 where the P < 0,05). Conclusion : there is an effect of the use of transtibial prosthesis in the form of improved body image for patients post transtibial amputation.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Silvio Ionta ◽  
Michael Villiger ◽  
Catherine R Jutzeler ◽  
Patrick Freund ◽  
Armin Curt ◽  
...  

Abstract The brain integrates multiple sensory inputs, including somatosensory and visual inputs, to produce a representation of the body. Spinal cord injury (SCI) interrupts the communication between brain and body and the effects of this deafferentation on body representation are poorly understood. We investigated whether the relative weight of somatosensory and visual frames of reference for body representation is altered in individuals with incomplete or complete SCI (affecting lower limbs’ somatosensation), with respect to controls. To study the influence of afferent somatosensory information on body representation, participants verbally judged the laterality of rotated images of feet, hands and whole-bodies (mental rotation task) in two different postures (participants’ body parts were hidden from view). We found that (i) complete SCI disrupts the influence of postural changes on the representation of the deafferented body parts (feet, but not hands) and (ii) regardless of posture, whole-body representation progressively deteriorates proportionally to SCI completeness. These results demonstrate that the cortical representation of the body is dynamic, responsive and adaptable to contingent conditions, in that the role of somatosensation is altered and partially compensated with a change in the relative weight of somatosensory versus visual bodily representations.


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