Spring Research Articles

Editorial

An introduction to the spring 2013 issue of in education.

TRACING THE ORIGIN OF SPRING WATER BY USING ENVIRONMENTAL ISOTOPES IN THE SOUTHERN SLOPE OF MOUNT MERAPI, INDONESIA

The first and most fundamental question to conserve a springs is where the boundaries of springs’ recharge zone. Research in determining recharge zone of Wadon springs (631 m.asl) which located at the southern slope of mount Merapi has been conducted. Topography and hydro-geological data used to find out the locations of groundwater sampling or recharge zone hypothetic, meanwhile the isotopic compositions (H, O, and C) utilized to determine the origin of groundwater. The isotopic compositions in groundwater samples were collected from wells, springs, and boreholes at southern slope of mount Merapi. Merapi meteoric water line (MMWL) describing the relationship between isotopic compositions and elevation [6] was used as a reference of isotopic compositions of water samples to find out the origin of groundwater. Based on the δ2H and δ18O values and MMWL, it can be concluded that the recharge zone of Wadon springs is ranging from the elevation of 650 m.asl (Pagerjurang) to 1260 m.asl (Plawangan). The δ13C value as well as tritium supports the conclusion; mostly δ13C in recharge zone and Wadon springs comes from the same source of carbon; that is -17.74±0.27‰ to -10.96±0.66‰ Pee Dee Belemnite (PDB); this holds for δ13C in the range of groundwater Dissolved Inorganic Carbon (DIC). Based on the tritium concentration decreasing from ≥ 4.20 TU to <4.20 TU exhibits that groundwater also comes from recharge zone to Wadon springs. By referring to the recharge elevation and topography maps, it can be estimated that the area of recharge zone is 8.033 km2.

News from AESOP: Spring 2013

News from AESOP: Spring 2013

Table of Contents, Vol. 1, No. 1 (Spring 2013)

Table of Contents, Vol. 1, No. 1 (Spring 2013)

Editorial: JIME Spring 2013

In this Spring 2013 issue of JIME there are three articles, which are quite different in nature. Normal 0 false false false EN-GB JA X-NONE

Front Matter, The Annals of Iowa, v. 72 no. 2 Spring 2013

Front Matter, The Annals of Iowa, v. 72 no. 2 Spring 2013

Surgery spring sounds: topic justifies

Surgery spring sounds: topic justifies

Back Matter, The Annals of Iowa, v. 72 no. 2 Spring 2013

Back Matter, The Annals of Iowa, v. 72 no. 2 Spring 2013

Spring Lament/or Celebration

Spring Lament/or Celebration

Editor-in-Chief's Introduction to Spring 2013 Issue

Editor-in-Chief's Introduction to Spring 2013 Issue

Spring Diary

Spring Diary

Back Matter, The Iowa Review, v. 43 no. 1, Spring 2013

Back Matter, The Iowa Review, v. 43 no. 1, Spring 2013

Editor's Note, The Iowa Review, v. 43 no. 1, Spring 2013

Editor's Note, The Iowa Review, v. 43 no. 1, Spring 2013

Front Matter, The Iowa Review, v. 43 no. 1, Spring 2013

Front Matter, The Iowa Review, v. 43 no. 1, Spring 2013

Contributors' Notes, The Iowa Review, v. 43 no. 1, Spring 2013

Contributors' Notes, The Iowa Review, v. 43 no. 1, Spring 2013

RADIOLARIANS IN UPPER WATERS OF NANSHA SEA AREA BEFORE AND AFTER THE SUMMER MONSOON ONSET

28 towing samples for plankton were collected from the upper waters of the Nansha Islands and its adjacent sea areas in the spring of 2002 and 2004 for understanding the distribution pattern of modern radiolarians and their annual changes in the upper waters of Nansha sea area before and after the summer monsoon onset.The results showed that the dominant species in the spring of 2002 and 2004 were consisting of the tropical-subtropical warm species;however there were obviously annual differences in abundance distributions of radiolarians and their typical species.Noticeably,the radiolarian abundance and its dominant species were significantly different before and after the summer monsoon onset,suggesting that there was a response of radiolarians in upper waters to summer monsoon onset in the South China Sea;The radiolarian abundance after the summer monsoon onset was significantly higher than that before the summer monsoon onset,indicating that the marine environment after the summer monsoon onset would be good for the survive of radiolarians.However,it is necessary to further study the mechanism of the change and try to find more direct environmental parameters to indicate the changes in distribution pattern before and after the summer monsoon onset.This study also confirmed that T.octacantha and S.glacialis could be proxies for upwelling processes in the tropic.

Jack in the Box

A jack-in-a-box includes: a case provided with a plurality of insertion holes in an outer wall portion thereof; a jump-out member placed in a fixed position of the case; a plurality of insertion members to be inserted into each of the plurality of insertion holes; a jump-out-force applying device to apply spring force to the jump-out member in a jumping-out direction; a locking device capable of locking the jump-out member while resisting the spring force of the jump-out-force applying device and keeping the jump-out member in the fixed position of the case; a releasing device to release lock of the locking device; a detection device to detect insertion of the plurality of insertion members; an action generating device to perform a predetermined action; and a control device to set the number of insertion required until the jump-out member jumps out, cause the action generating device to perform the predetermined action when the number of insertion of the insertion members detected by the detection device has reached the set number, and then cause the releasing device to operate.

Design Analysis: Methods and Results

NNJ editor-in-chief Kim Williams introduces the papers in NNJ vol. 15, no. 1 (Spring 2013).

Editorial

An introduction to our Spring 2011 issue

Effect of black legume aphid &lt;i&gt;Aphis craccivora&lt;/i&gt; honeydew on survival of the parasitoid &lt;i&gt;Microctonus aethiopoides&lt;/i&gt;

The introduced parasitoid Microctonus aethiopoides (Hymenoptera Braconidae) appears to be an effective biocontrol agent for clover root weevil Sitona lepidus Gyllenhal (Coleoptera Curculionidae) in New Zealand pastures As these pastures lack accessible nectar sources hemipteran honeydew may be the most readily available energy source for the parasitoid Experiments were undertaken to compare longevity of newly emerged M aethiopoides adults caged on white clover firstly with and without black legume aphid Aphis craccivora Kock (Hemiptera Aphididae) and then with additional water and sucrose solution treatments Parasitoids with access to aphid honeydew lived significantly longer (mean longevity 81 days) than those with water or no liquid (both 68 days) but not as long as those fed sucrose solution (109 days) Therefore the abundance of aphids commonly present on clovers may enhance M aethiopoides longevity and therefore efficacy in the field especially in mid spring when host availability is very low