《速度生活》城市有车族的生活平台

《速度生活》栏目是福建人民广播电台2004年5月10日开办的一档为城市私家车拥有者服务的节目。每周一到周六17：00～19：00播出。 《速度生活》栏目以“帮助别人，快乐自己”的理念为节目宗旨。“我为人人，人人为我”的服务口号更是深入人心，让每一个听众都自觉地奉献自己的关怀和爱心，体现了和谐社会的良好氛围，弘扬了和谐社会的主旋律。

Effect of temperature on the growth of juvenile rock scallop (Crassadoma gigantea)

In order to study the effect of temperature on the growth of juvenile rock scallop(Crassadoma gigantea),learn more about its growth with temperature changes under the conditions of indoor circulating water temperature-controlled culture.Four temperature gradients of10℃,12.5℃,15℃and17.5℃were set,observed the growth of juvenile rock scallop at different test temperatures during two month.The results show:With the increase of test temperature,the growth rate first increased and then decreased.One-way analysis of variance showed that temperature had a significant effect on the growth rate(P<0.05),the optimum temperature was15℃,under this condition,the shell height average daily growth was significantly higher than the other three groups,the average daily growth of shell length and wet weight had no significant difference with17.5℃experimental group but significantly higher than the previous two groups.Within the experimental range,the change of temperature had no significant effect on the survival rate of juvenile rock scallop(P>0.05).

Technology Use Takes a Boost among University Students

The speed with which the information technology has evolved is unparallel to any other technological evolution man has ever witnessed. From hospitals to classrooms, technology seems to have taken over people＇s lives. Where there have been studies to see the impact of technology in varying aspects of life, there seem to be little or no studies on the actual rate of increase in usage of e-technologies among university students and why they have become so popular. This paper uses a survey tool that captures responses from 900 students to study the rate of increase in student use of various e-technologies in and out of classrooms along with some viable reasons why students are acquiring and using such technologies and suggests ways to use this study to better understand student behavior in terms of e-cheating, and how to enhance teaching and learning environments for students.

Can Hydro-Priming Improve Germination Speed, Vigour and Emergence of Maize Landraces under Water Stress？

We evaluated whether hydro-priming could improve vigour characteristics and seedling emergence of local maize （Zea mays L.） landraces compared to two commercial hybrids under water stress at the University of KwaZulu-Natal, Pietermaritzburg. Seeds from local landraces were produced and characterized according to kernel colour, white （Land A） and purple （Land B）, and compared to two hybrids, SC701 and SR52, which are popular amongst local farmers. Seeds from each variety were soaked in water for 0 hours （unprimed or control）, 12 hours and 24 hours, and germinated in a germination chamber at 25 ℃ for 8 days. Parameters measured included final germination, mean germination time （MGT） and germination velocity index （GVI）. Seedling emergence was performed in seedling trays, using pine bark wetted to 25% or 75% of field capacity （FC）, for 21 days in a temperature-controlled glasshouse （25 ℃day; 15 ℃night; 60% RH）. Parameters measured included final emergence, mean emergence time （MET）, root and shoot lengths, and leaf area. Priming landraces for 12 and 24 hours reduced MGT by 9% and 7%, respectively, compared to 5% in hybrids for both 12 and 24 hours priming. GVI of landraces was improved by 40% following 12 hours of priming. GVI of hybrids was 11% and 7% slower than landraces after priming seeds for 12 and 24 hours, respectively. Priming seeds for 24 hours improved emergence at 25% FC. Priming seeds for 24 hours reduced MET for all varieties. Priming seeds for 12 and 24 hours increased leaf area by 33.8% and 29%, respectively. Hydro-priming seeds for 12 and 24 hours, respectively, improved GVI, reduced MGT and improved emergence and MET of maize landraces under water stress. Performance of hybrid seeds remains superior to that of landraces even after seed treatment to improve germination and vigour. The positive response of landraces to seed treatment, and improved performance under water stress conditions, suggest that there is a need to identify genes for vigour in landrace maize.

Upper crustal P-wave velocity structure beneath two volcanic areas in northern Iran

Detailed information about the crustal structure is essential for better understanding the occurrence and mechanisms of earthquakes and volcanoes.Here we present a study of the upper crustal P-wave velocity structure of two seismically and volcanically active areas in northern Iran using the two-dimensional Pg travel time tomography method.The imaging results suggest low velocities in the upper crust beneath the Damavand and Sahand-Sabalan volcanic areas in the central and western parts of northern Iran,respectively.The upper crustal low velocities in these two areas roughly coincide with previously imaged low Pn velocity anomalies,suggesting that the Late Cenozoic volcanic activity was probably caused by the upwelling of hot materials from the mantle.The image feature of the Pg velocity structure beneath the Sahand-Sabalan volcanic area further indicates that the hot materials stored in the upper crust beneath Sahand may be larger in size than those stored beneath Sabalan.Comparison of the Pg velocity images with the earthquake distribution in north Iran suggests that earthquakes mainly occur at moderately low velocity or low to high velocity boundary areas instead of significantly low or high velocity regions.The anisotropy results show that the Pg wave fast direction is consistent with the GPS direction at high Pg velocity areas and the fast direction is inconsistent with the GPS direction but consistent with the strike direction of faults at low velocity areas.Our new upper crustal structural images provide the basic observation for better understanding of the regional seismicity and volcanism,and link the surface geological phenomena to deep crustal and mantle processes associated with the active tectonics in northern Iran.