scholarly journals Effect of life cycle on the production of mullein (Verbascum phlomoides L.)

2004 ◽  
Vol 10 (1) ◽  
Author(s):  
Zs. Bodor ◽  
E. Németh
Keyword(s):  
Life Cycle ◽  
Quantitative Data ◽  
Early Spring ◽  
Fresh Mass ◽  
Cultivation Conditions ◽  
Active Materials ◽  
Sowing Time ◽  
Late Autumn ◽  
The Mean ◽  
Growing Population

Aim of the present investigations was the optimalization of the production of the annual cultivar `Napfény' of Verlxiscum phlomoides L. Quantitative data on morphology (growth, leaf and flower size, branching) yield and content of active materials (mucilages, flavonoids) were studied at six sowing times. We established, that sowing time may be one basic factor in the production of the annual variety. The major yield was obtained by sowing either late autumn (end of October) or early spring (middle March). At these plots the fresh mass of the flowers was 257-288 g/plant, the drug mass 28-29 g/plant, by 45-70% more than that of the mean of other treatments. It was established, that under optimal cultivation conditions the annual form of mullein may reach higher individual yields than the plants of the indigenous wild growing population.

Studies on the life-cycle of Asymphylodora tincae Modeer, 1790) Trematoda: Monorchiidae) in a small lake near Amsterdam: Part 2: The relations between Asymphylodora tincae and its definitive host, Tinca tinca

1981 ◽  
Vol 55 (4) ◽  
pp. 239-246 ◽  
Author(s):  
M. A. Zietse ◽  
Elisabeth Van Den Broek ◽  
Elze E. A. Erwteman-Ooms
Keyword(s):  
Life Cycle ◽  
Definitive Host ◽  
Natural Infection ◽  
Early Spring ◽  
Summer Season ◽  
Tinca Tinca ◽  
Mean Intensity ◽  
The Mean ◽  
Infection Experiments

ABSTRACTThe natural infection of tench by Asymphylodora tincae in a lake was studied during one summer season. The incidence of infection was 57%, the mean intensity about 50. The distribution of the digencans along the host's intestine showed a maximum in the second half; this could be modified by the presence of other helminth species. Tench caught in early spring and kept in the laboratory retained their natural infection throughout the summer. Starvation of hosts during two months caused disappearance of the infection. Experiments showed that metaecrcariae, introduced into the intestine of tench, can excyst within one hour. In vitro, cysts in contact with tench bile opened within 15 seconds. Bile of several other cyprinid fisli species caused excystment within 60 seconds. Asymphylodora eggs appeared in tench faeces 7 to 10 days after infection. Progenetic specimens of A. tincae probably disintegrate in the intestine of the tench and their eggs arc passed out with the faeces.

Over-winter activity and body temperature patterns in northern beavers

1991 ◽  
Vol 69 (8) ◽  
pp. 2178-2182 ◽  
Author(s):  
Douglas W. Smith ◽  
Rolf O. Peterson ◽  
Thomas D. Drummer ◽  
Daniel S. Sheputis
Keyword(s):  
Body Temperature ◽  
Core Body Temperature ◽  
Castor Canadensis ◽  
Resource Scarcity ◽  
Early Spring ◽  
Late Autumn ◽  
Reduced Body ◽  
Winter Activity ◽  
The Mean ◽  
Core Body

Transmitters were implanted in three adult, one yearling, and one kit beaver (Castor canadensis) in northern Minnesota and upper Michigan to determine if core body temperature (Tb) declined in winter. Beaver Tb and activity were automatically recorded from late autumn through early spring. In late October through early November, mean daily Tb of adults was 36.3 °C (range 34.5–37.6 °C), with a mean daily Tb fluctuation of 1.4 °C. From fall to winter adult beaver Tb declined at a mean rate of 0.01 °C/day, and the mean daily winter (17 November – 15 April) Tb was 35.3 °C (range 32.5–38.8 °C). Mean daily winter Tb fluctuation was 2.5 °C. In early March, mean adult daily Tb began increasing at a rate of 0.03 °C/day. Tb and activity were positively correlated, except for the kit beaver, which did not undergo a significant Tb decline during winter. The yearling beaver Tb declined at a slower rate than adult Tb, and its Tb was intermediate between that of the kit and the three adults. Continued body growth in winter in young beavers is probably enhanced by high body temperature. For adult beavers, reduced body temperature in winter may be an adaptation that facilitates survival during extreme resource scarcity.

scholarly journals The Seasonal Cycle in the Cornish Pilchard, Sardina Pilchardus Walbaum

1945 ◽  
Vol 26 (2) ◽  
pp. 115-138 ◽  
Author(s):  
C. F. Hickling
Keyword(s):  
Seasonal Variation ◽  
Seasonal Cycle ◽  
Early Spring ◽  
Ash Content ◽  
Average Weight ◽  
Early Winter ◽  
Sardina Pilchardus ◽  
Late Autumn ◽  
Planktonic Food ◽  
The Mean

1. In the pilchard (Sardtha pilchardus Walbaum) of Cornwall there is a substantial seasonal variation in the mean weight of a fish of given length. The weight is highest in late autumn and early winter, and least at the end of winter and the early spring.2. These changes in weight are largely due to variations in the fat content of the fish, which are richest in fat at the beginning of the winter fast, and poorest at the end of it. But, especially among the larger fish, the 'residue', chiefly proteins, are drawn upon at the time of the exhaustion of the fat, and consequently at the time of minimum mean weight. The water and ash content show no seasonal variation, and therefore play no part in the observed seasonal variation in the mean weight of the entire fish.3. The gonads have their lowest mean weight in August, increase in weight slowly throughout the winter, and are at their maximum state of development from April to July. The spawning season, as deduced from these samples, is from March to September.4. The rate of feeding is greatest in the same months as the spawning months, namely, from April to July. From July to September the average weight of food per stomach decreases, probably not because the planktonic food is then less abundant, but because it is shared among a greater number offish. In October there is a rally in the rate of feeding, but from November to February or March is a period of fasting, when very little food is taken.5. The food of the pilchard is exclusively planktonic. In the spring, and again in the autumn, diatoms are abundant or even dominant in the food; in the summer, copepods and Crustacea are the chief items of food.

scholarly journals Fog characteristics at the airport of Thessaloniki, Greece

2009 ◽  
Vol 9 (5) ◽  
pp. 1541-1549 ◽  
Author(s):  
S. N. Stolaki ◽  
S. A. Kazadzis ◽  
D. V. Foris ◽  
Th. S. Karacostas
Keyword(s):  
Early Spring ◽  
Dew Point ◽  
Cloud Base ◽  
Northern Greece ◽  
Radiation Fog ◽  
Late Autumn ◽  
Physical Mechanisms ◽  
The Mean ◽  
Winter Time ◽  
Advection Fog

Abstract. A statistical approach in order to study fog event characteristics occuring at the airport of Thessaloniki, Northern Greece is presented in this work. To achieve this, the seasonal and diurnal characteristics of fog are investigated using 35 years (1971–2005) of observations of meteorological parameters such as: visibility, air temperature, dew point temperature, air relative humidity, wind vector, precipitation, and cloud base height and coverage. Hourly surface observations of fifteen (15) years (1991–2005) are used to identify fog events induced by various physical mechanisms. Fog events are classified into fog types through the application of objective criteria that are derived upon fog formation processes and under the influence of various physiographic features. The temporal variability of different fog type occurrences are examined and the events are characterized according to their duration and intensity. The results are somehow affected by regional and local factors. Fog is mainly formed in winter time (~64%) with an enhanced likelihood to appear also in late autumn (19%). The highest frequency of the fog events occurs around sunrise or 1 to 2 h before of it. The mean duration of the events is about 4.5 h. Most of them (75%) are dense (visibility <400 m). The overall fog phenomenon is a combination of various types, such as: advection fog, radiation fog, cloud-base lowering fog and precipitation fog. Advection fog (30%) and radiation fog (29%), which are the most common types, occur predominantly in winter and early spring time. With respect to the former type, it seems that, in many cases, already formed fog is advected from the nearby Anthemountas valley. Moreover, a considerable number of fog events (22%) result from cloud-base lowering, and they frequently occur in late autumn and mid winter.

IMPROVING STUDENTS’ ACHIEVEMENT IN WRITING PROCEDURE TEXTS THROUGH WORD WEBBING TECHNIQUE

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Diah Fauzi Ningtyas ◽  
Lidiman Sinaga
Keyword(s):  
Data Analysis ◽  
Action Research ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Action Observation ◽  
Qualitative And Quantitative ◽  
Text Word ◽  
Procedure Text ◽  
The Mean ◽  
Planning Action

This study concerns on improving students’ achievement in writing procedure texts through word webbing technique. The research was conducted by using Classroom Action Research (CAR). The population was the 2012-2013 nine grade students of SMP Negeri 1 Batang Kuis. The number of students was 36, consisting of 21 females and 15 males. The procedure of the research was administrated into two cycles where each cycle consisted of three meetings. Each meeting included four steps namely: planning, action, observation, and reflection. There were two kinds of data collected during the study, qualitative and quantitative data. The instrument for collecting the quantitative data was the writing of procedure texts test while the qualitative data were gathered by using interview, diary notes and observation sheet. Based on the data analysis, the mean of students’ score in Test I was 53,47, for the Test II was 63,05, and for the Test III was 75 The qualitative data showed that the students were interested in the applying of Word webbing Technique. The conclusion is that Word Webbing Technique in writing Procedure Texts improves the students’ achievement in writing procedure texts. Keywords: Students’ achievement, writing, procedure text, word webbing

Improving the Students’ Achievement in Reading Comprehension by Using Inquiry Technique

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Gigin Sappena Ginting ◽  
Siti Aisah Ginting
Keyword(s):  
Reading Comprehension ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Reading Process ◽  
English Teacher ◽  
Comprehension Score ◽  
The Mean ◽  
Teaching Learning ◽  
Comprehension Tests ◽  
Orientation Test

This study attemps to imorove the students’ achivement in reading comprehension through inquiry technique. The study was conducted by using classroom action research. The subjects of the research were the 45 students of Grade XI SMA Negeri 1 Bahorok. It was conducted in two Cycles and consisted of six meetings.The instruments for colecting data used Reading Comprehension tests for quantitative data and Diary Notes, Interview Sheet, and Observation Sheet for qualitative data. Based on the Reading Comprehension score, students score in pre test, kept improving in every test. Based on Diary Notes, Observation sheet and Interview Sheet, it was found that the students were actualy involved in reading process. The results of the reasearch showed that Inquiry Technique can improve the students’ achivement in Reading Comprehension. In orientation test the mean of the students’ score was 53, the mean of the students’ score in Cycle I was 62.07, and the mean of the students’ score in Cycle II was 71.6. Based on the Observation Sheet, Diary Notes, and Interview Sheet, it was found that the teaching-learning process run well. The conclusion is that Inquiry Technique improved the students’ reading Coprehension and it is suggested to the English teacher to apply Inquiry Technique in Reading Comprehension. Keywords : Improving, students’ achievement, Inquiry Technique

IMPROVING STUDENTS’ ACHIEVEMENT IN WRITING RECOUNT TEXT THROUGH THINK PAIR SHARE

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Hotria Manik ◽  
Elia Masa Ginting
Keyword(s):  
Action Research ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Writing Achievement ◽  
The Third ◽  
Post Test ◽  
Class Viii ◽  
The Subject ◽  
The Mean ◽  
Writing Tests

This study attempts to improve students’ writing achievement in recount text through Think-Pair-Share Strategy. This study was conducted by using classroom action research. The subject of the research was class VIII-1 SMPN 1 Pematangsiantar. The number of the students was 32 students, consisted of 5 males and twenty seven females. The research was conducted in two cycles and consisted of six meetings. The instruments for collecting data were writing tests as the quantitative data and diary notes, observation sheet, interview sheet and questionnaire sheet as qualitative data. Based on the writing score, students’ scores kept improving in every test. In analyzing the data, the mean of the students’ score for the first test as a pre-test was 57.84, for the second test as a post test I was 73.56, for the third test as a post test II was 77.56. Based on diary notes, observation sheet and questionnaire sheet, it was found that students were actively involved in writing process. The result of the research showed that Think-Pair-Share Strategy can improve students’ achievement in writing recount text.   Keywords: Think Pair Share, Writing, Recount text, Action research

IMPROVING THE STUDENTS’ READING COMPREHENSION ACHIEVEMENT IN DESCRIPTIVE TEXT THROUGH TEAM GAMES TOURNAMENT

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
DesiYusnanda Sari And Sri MindaMurni
Keyword(s):  
Reading Comprehension ◽  
Learning Process ◽  
Quantitative Data ◽  
Qualitative Data ◽  
Reading Scores ◽  
Team Games ◽  
The Subject ◽  
The Mean ◽  
Teaching Learning ◽  
Data Reading

This study attempted to improve the students’ reading comprehension achievement in descriptive text through Team Games Tournament (TGT) method. This study was conducted by using classroom action research. The subject of the research was class IX SMP PAB 10 Medan Estate which consisted of 25 students. The research was conducted in two cycles and the first cycle consisted of four meetings the second cycle consisted of two meetings. The instruments for collecting the data were quantitative data (reading evaluation) and qualitative data (diary note, observation sheet and interview sheet). Based on reading scores, students’ score kept improving in every evaluation. In the test I the mean was 65,33, in the test II the mean was 71,72 and the test III the mean was 84,54.Based on diary note, observation sheet and interview sheet, it was found that teaching-learning process ran well. Students were active, enthusiastic, and interested in reading. The result of the research showed that Team Games Tournament (TGT) method significantly improved students’ achievement in reading comprehension especially in reading descriptive text.

IMPROVING STUDENTS’ ACHIEVEMENT IN SPEAKING THROUGH TWO STAY TWO STRAY STRATEGY

2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Dita Masyitah Sianipar And Sumarsih
Keyword(s):  
Action Research ◽  
Learning Process ◽  
Quantitative Data ◽  
Test Score ◽  
Qualitative Data ◽  
Speaking Test ◽  
The Subject ◽  
The Mean ◽  
Teaching Learning ◽  
The Way

This study deals with the way to improve students’ achievement in speaking particularly through Two Stay Two Stray Strategy. This study was conducted by using classroom action research. The subject of of the research was class X-AP SMK Swasta Harapan Danau Sijabut in Asahan Regency that consisted of 34 students. The research was conducted in two cycles consisted of three meetings in each cycle. The instruments of collecting data for quantitative data used Speaking Test and instrument for analysis of qualitative data used observation, interview and questionnaire sheet. Based on the speaking test score, students’ score kept improving in every test. In the test I the mean was 61,47, in the test II the mean was 67,41 and the test III the mean was 78,52. Based on observation sheet and questionnaire sheet, it was found that teaching learning process run well and lively. Students were active and interest in speaking. The using of Two Stay Two Stray Strategy is significantly improved students’ achievement in speaking.

IMPROVING STUDENT’S VOCABULARY ACHIEVEMENT THROUGH “MAKE A MATCH METHOD”

2013 ◽  
Vol 2 (4) ◽  
Author(s):  
Ade Iriyani And Sortha Silitonga
Keyword(s):  
Action Research ◽  
Quantitative Data ◽  
Qualitative Data ◽  
English Teacher ◽  
Match Method ◽  
Class Viii ◽  
The Mean ◽  
Second Year ◽  
Teacher Use ◽  
Vocabulary Achievement

The objective of the study is to find out if the students’ vocabulary achievement improved through Make a Match Method. The research of this study was conducted by using action research. The subjects of this study were the second year students of MTs Swasta Al-Badar Tanjungbalai class VIII consisted of 31 students. The research was conducted in two cycles and every cycle consisted of three meetings. Quantitative and qualitative instruments were used to gather the data. Quantitative data was taken from the students’ score in vocabulary mastery, while qualitative data was taken from diary notes, observation sheets and questionnaire sheets. Based on the data, the students’ scores got improvement in every cycle. In test I, the mean of the students’ score was 59 while test II, the mean of the students’ score was 70.5 and in test III the mean of the students’ score was 77.3. It was found that the teaching vocabulary through Make a Match Method improve the students’ vocabulary Achievement. It is suggested that English teacher use Make a Match Method as one of alternatives method in teaching vocabulary.

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