scholarly journals Lavender, Eucalyptus, and Orange Essential Oils as Repellents Against Ixodes Ricinus Females

2017 ◽  
Vol 48 (2) ◽  
pp. 76-81
Author(s):  
M. Kulma ◽  
T. Bubová ◽  
O. Kopecký ◽  
F. Rettich
Keyword(s):  
Essential Oils ◽  
Ixodes Ricinus ◽  
The Other ◽  
Repellent Effect ◽  
Environment Friendly ◽  
Orange Oil ◽  
Outdoor Activities ◽  
Disease Vector ◽  
Comparison Sample ◽  
Other Hand

Abstract This study evaluated the repellent effect of three essential oils against females of Ixodes ricinus, which is considered to be the main arthropod disease vector in Europe. The essential oils could be regarded as user- and environment-friendly alternatives to synthetic repellents. As a comparison sample, the most widely used synthetic repellent DEET was used. All the tested oils exhibited moderate to high initial repellency of 65-85% 5 min after application. The testing was terminated after 80 min, when lavender and eucalyptus repelled 45% and 15% of ticks, respectively. No effect of orange oil was observed after a 20-min mark. The effect of DEET was found to be high and stable (95-100%) throughout the experiment. This study thus revealed that the investigated oils are not as effective as DEET. On the other hand, especially lavender showed an interesting potential as an alternative repellent for outdoor activities of shorter duration.

scholarly journals Experiential Outdoor Activities In Improving Students’ Vocabulary Achievement

2020 ◽  
Vol 4 (2) ◽  
pp. 101-116
Author(s):  
Musrafidin Simanullang
Keyword(s):  
Test Score ◽  
Alternative Hypothesis ◽  
The Other ◽  
P Value ◽  
Outdoor Activities ◽  
Other Hand ◽  
Post Test ◽  
The Mean ◽  
Academic Year ◽  
Vocabulary Achievement

This research is A Classroom Action Research held at SMP Negeri 4 Sipoholon in Academic Year 2018/2019. The problem of the research is; Does experiential outdoor activities significantly improve the students’ vocabulary achievement of the eight grade students at SMP Negeri 4 Sipoholon? And the objective is to find out whether experiential outdoor activities significantly improve the students’ vocabulary achievement. The subject of the research is 20 students of the eight grade students of SMP N. 4 Sipoholon in academic year 2018/2019. This research was only acted in one cycle in which, that in pre-test there was not student who got good and very good interpretation yet there are one who was fail and 8 students who were poor, in the minimum criterion used in the school is 70, so the researcher concluded that based on the students’ pre-test score they are fail. In fact based on the data analysis of the post-test that there are 11 students who got very good (80 – 100) and 9 students got good (66 – 79), and none of the students got fair (56-65), poor (40-55), and fail (39). It means all the students passed the minimum criterion applied in that school. On the other hand, it can be concluded that experiential out-activities significantly improves the students’ vocabulary mastery. Besides, by analyzing the data through t-test, it can be concluded that the mean of students’ post test score is higher than the mean of students’ pre-test score or 78.25 55.25. In addition, p-value under df (degree of freedom) is 19 or 1.729, it was found t-value has a significant different with t-table or 78.25 1.729. On the other hand, it can be said that the Ho (null hypothesis) is rejected and the Ha (alternative hypothesis) is accepted, in which there is a significant improvement of students’ vocabulary achievement taught by experiential outdoor activities. Keyword: Experiential Outdoor Activities, Students’ Vocabulary Achievement

scholarly journals Imbalance Identity in E-Sports News Intersectionality on Covid-19 Pandemic Situation

2020 ◽  
Vol 5 (2) ◽  
pp. 206
Author(s):  
Rustono Farady Marta ◽  
Alvin Alexander Prasetya ◽  
Bella Laurensia ◽  
Stevani Stevani ◽  
Kenn Lazuardhi Syarnubi
Keyword(s):  
Digital Age ◽  
The Other ◽  
Framing Analysis ◽  
News Frames ◽  
Outdoor Activities ◽  
Other Hand ◽  
Self Actualization ◽  
The Government ◽  
Sports News ◽  
Digital Sports

 The COVID-19 situation is a moment that homogenizes everyone's efforts to reduce outdoor activities, so a space of self-actualization is required to trigger creative skills and sportsmanship. The most qualified alternative to answer these needs for everyone in the digital age is the E-sport. Trying to take advantage of this opportunity, Bubu Gaming, as an Indonesian digital sports games marketer, initiated "LiveStream Aid 2020" with the theme "PlayFromHome, Stay Safe, Donate." Tirto.id and Kompas.com covered the two-day event. However, researchers interrogate those two news frames and discover different perspectives. Guided by Entman Framing Analysis with the theory of intersectionality, the results obtained indicate the imbalance of identity in those news frames. Tirto.id viewed from the category of structural intersectionality and built the reader's opinion that the government, through Sandiaga Uno, supports these activities. On the other hand, Kompas.com put the name of Pevita Pearce without adequate narrative so that it can be categorized as representational intersectionality.

scholarly journals Essential Oils from the Leaves of Six Medicinal Plants of Nigeria

2013 ◽  
Vol 8 (2) ◽  
pp. 1934578X1300800
Author(s):  
Isiaka A. Ogunwande ◽  
Nudewhenu O. Avoseh ◽  
Guido Flamini ◽  
Alimot-Sadiat O. Hassan ◽  
AbdulRazaq O. Ogunmoye ◽  
...  
Keyword(s):  
Essential Oils ◽  
Volatile Oil ◽  
The Other ◽  
Caryophyllene Oxide ◽  
Solanum Torvum ◽  
Trace Quantity ◽  
Cassia Siamea ◽  
Other Hand ◽  
Geranyl Acetone ◽  
First Time

The chemistry of Cassia siamea L., C. occidentalis L. (Fabaceae), Cnestis ferruginea Vahl ex DC (Connaraceae), Anthocleista djalonensis A. Chev (Loganiaceae), Solanum torvum Swartz and S. erianthum G. Don (Solanaceae) volatiles grown in Nigeria have been studied. The essential oils were obtained by hydrodistillation and analyzed by GC and GC-MS. The main compounds of C. siamea were (E)-geranyl acetone (5.8%), 1-octen-3-ol (5.8%), linalool (7.8%), iso-italicene (15.4%) and (E)-β-damascenone (11.0%). On the other hand, C. occidentalis consisted mainly of (E)-geranyl acetone (8.0%), hexahydrofarnesylacetone (24.0%) and (E)-phytol acetate (40.7%). The oil of C. ferruginea was comprised mainly of (E)-geranyl acetone (13.7%), (E)-α-ionone (9.5%), phytol (5.8%), pentadecanal (6.1%) and 1-octen-3-ol (5.5%). The main compounds of A. djalonensis were α-humulene (31.9%), β-caryophyllene (17.8%), humulene epoxide II (12.7%) and caryophyllene oxide (5.9%). The main volatiles of S. torvum were (E)-phytol acetate (38.7%), pentadecanal (25.3%) and (E)-geranyl acetone (5.0%). Apart from methyl salicylate (4.5%), tetradecanal (2.2%), 2-pentyl furan (1.8%), hexahydrofarnesylacetone (1.6%) and hexadecanal (1.1%), all other compounds were either present in trace quantity or in amounts less than 1%. On the other hand, α-humulene (46.6%) and β-caryophyllene (20.6%) were the compounds occurring in higher quantities in S. erianthum. The volatile oil contents of Cassia siamea, Cnestis ferruginea, Anthocleista djalonensis and Solanum torvum are being reported for the first time.

scholarly journals Aromatherapy Oils: Commodities, Materials, Essences

2014 ◽  
Vol 20 (2) ◽  
Author(s):  
Ruth Barcan
Keyword(s):  
Cultural Studies ◽  
Material Culture ◽  
Essential Oils ◽  
Material Properties ◽  
New Age ◽  
The Other ◽  
Other Hand ◽  
Political Implications ◽  
Political Understanding

This article examines the essential oils that are the central tools of aromatherapy and uses them as a case study for different approaches to material culture. It considers the conceptual and political implications of thinking of essential oils as, in turn, commodities, materials and essences. I argue that both cultural studies and aromatherapy have something to learn from each other. Classic materialist approaches might do well to focus more attention on the material properties and effects of things. Aromatherapy, on the other hand, could benefit from the enriched political understanding associated with classic materialist critique. New materialist strains of cultural studies may also find the vibrancy of matter that underpins many CAM/New Age practices worthy of examination.

scholarly journals Grievance Redressal System

2020 ◽  
pp. 1-4
Author(s):  
Mohammad Shahnawaz ◽  
◽  
Prashant Singh ◽  
Prabhat Kumar ◽  
Anuradha Konidena ◽  
...  
Keyword(s):  
Competent Authority ◽  
The Other ◽  
Environment Friendly ◽  
Other Hand

An effective and efficient response to the complaints is an essential index of organization’s performance. In colleges if anyone wants to complaint about something they have to write it down on a paper and submit which is not environment friendly. So, for solving this problem we developed Grievance redressal system. Here anyone associated with college being a student, faculty or working staff can easily file their complaint. To make this window more secure we mandated registration and login before one can file their complaint. These complaint are going to be solved by competent authority. The presented model for the Complaint Redressal System will have the ability to minimize people’s dissatisfaction and on the other hand it can encourage people to participate in improving the quality of the service provided.

scholarly journals Spermatogenesis in Ixodes ricinus Linn

Parasitology ◽  
1920 ◽  
Vol 12 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Erik Nordenskiöld
Keyword(s):  
Ixodes Ricinus ◽  
The Other ◽  
Normal Type ◽  
Other Hand

It has long been known that ticks possess spermatozoa that differ considerably from the typical flagellate form. In similar cases science has always attempted to trace the aberrant type back to the normal with a view to identifying its constituent parts. Many forms, even those which at first sight appear incapable of being compared with the normal, have recently been thoroughly analysed in this manner. On the other hand there occur several types of spermium whose parts it is impossible to compare with those of the normal type and in these instances all that can be done is to identify the elements that take part in the fertilization, viz. the nucleus and centrosome.

scholarly journals Constituents of Volatile Oils from Limnophila aromatica and Adenosma capitatum

1970 ◽  
Vol 46 (3) ◽  
pp. 385-388 ◽  
Author(s):  
JU Chowdhury ◽  
MNI Bhuiyan ◽  
J Begum
Keyword(s):  
Essential Oils ◽  
Key Words ◽  
The Other ◽  
Volatile Oils ◽  
Aerial Parts ◽  
Other Hand

The essential oils isolated from the aerial parts of Limnophila aromatica (Lamk.) Merr. and Adenosma capitatum (Benth) Benth ex Hance were analyzed by GC-MS. Twenty nine and forty two components were identified, representing 99.3 and 98.6% of the total oils respectively. Oil of L. aromatica rich in Z-ocimene (39.2%), terpinolene (17.2%) and camphor (12.9%). On the other hand, A. capitatum rich in limonene (24.7%), fenchone (21.6%) and 2-carene (17.6%). Key words : Limnophila aromatic; Adenosma capitatum; Essential oils; Z-ocimene; Limonene. DOI: http://dx.doi.org/10.3329/bjsir.v46i3.9048 BJSIR 2011; 46(3): 385-388

scholarly journals Biological Activities of Essential Oils from Leaves of Paramignya trimera (Oliv.) Guillaum and Limnocitrus littoralis (Miq.) Swingle

Antibiotics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 207 ◽  
Author(s):  
Nhan Trong Le ◽  
Duc Viet Ho ◽  
Tuan Quoc Doan ◽  
Anh Tuan Le ◽  
Ain Raal ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Essential Oils ◽  
Candida Tropicalis ◽  
Candida Parapsilosis ◽  
Biological Activities ◽  
The Other ◽  
Normal Cells ◽  
First Report ◽  
Other Hand ◽  
Hiv 1

The present study aimed to determine the bioactivities of essential oils extracted from the leaves of Paramignya trimera and Limnocitrus littoralis, including cytotoxicity, antiviral, antibacterial, antimycotic, and antitrichomonas effects. Herein, it was indicated that P. trimera and L. littoralis oils showed no cytotoxicity on normal cells, namely MT-4, BHK-21, MDBK, and Vero-76. P. trimera oil (i) exhibited the strongest inhibition against Staphylococcus aureus with MIC and MLC values of 2% (v/v); (ii) showed MIC and MLC values of 8% (v/v) in Candida parapsilosis; and (iii) in the remaining strains, showed MIC and MLC values greater than or equal to 16% (v/v). On the other hand, L. littoralis oil (i) displayed the strongest inhibition against Candida tropicalis and Candida parapsilosis with 2% (v/v) of MIC and MLC; and (ii) in the remaining strains, possessed MIC and MLC greater than or equal to 16% (v/v). In addition, antitrichomonas activities of the oils were undertaken, showing IC50, IC90, MLC values, respectively, at 0.016%, 0.03%, and 0.06% (v/v) from P. trimera, and 0.03%, 0.06%, 0.12% (v/v) from L. littoralis, after 48 h of incubation. The oils were completely ineffective against ssRNA+ (HIV-1, YFV, BVDV, Sb-1, CV-B4), ssRNA- (RSV, VSV), dsRNA (Reo-1), and dsDNA (HSV-1, VV) viruses. This is the first report describing the cytotoxicity, antiviral, antibacterial, antimycotic, and antitrichomonas activities of the essential oils of P. trimera and L. littoralis.

Ixodes ricinus in Relation to its Physical Environment

Parasitology ◽  
1935 ◽  
Vol 27 (1) ◽  
pp. 123-144 ◽  
Author(s):  
John MacLeod
Keyword(s):  
Ixodes Ricinus ◽  
Experimental Analysis ◽  
Physical Environment ◽  
The Other ◽  
Physical Factors ◽  
Laboratory Conditions ◽  
Other Hand ◽  
Climatic Optimum

In a previous paper (MacLeod, 1934) the different physical factors in the environmental complex of the sheep tick were discussed in their relation to the development of the gorged tick, and an experimental analysis was made of the effects produced, under laboratory conditions, by their action and interaction. The present paper deals with the active unfed ticks. These present rather a different problem from the gorged ticks, for, whereas in their case the climatic optimum resolved itself into that combination of conditions under which development proceeded favourably and with a low attendant mortality, the unfed tick, on the other hand, is faced with two desiderata, survival and hostparasitisation, the physical optima for which may not be coincident. It is necessary, therefore, to consider not only the climatic optimum for survival and activity, but also the factor or factors which influence parasitisation, and those conditions under which host-parasitisation is facilitated.

A study of cometary eruptions through OH radio-lines

1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró
Keyword(s):  
Short Duration ◽  
Growth Curves ◽  
The Other ◽  
Initial Mass ◽  
Radio Lines ◽  
Other Hand ◽  
Sudden Rise

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.

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