Age changes in size, energy metabolism and cardio-respiratory activities of thyroidectomized cattle

Publication authorized August 31, 1942.Digitized 2007 AES.Includes bibliographical references

Application of a standard risk assessment scheme to a North Africa contaminated site (Sfax, Tunisia) - tier 1

Phosphorus is a critical element to agriculture, consequently global phosphate rock demand will remain rising to feed a growing world population. The beneficiation of phosphorous ore gives rise to several tons of a waste by-product [phosphogypsum (PG)] which valorisation is limited, within other reasons, by the risks posed to environment and human health. Although threatening, the accumulation in stacks is the only procedure so far practiced by several countries as a means to get rid of this industrial externality. As part of a NATO Science for Peace Project (SfP 983311) this study describes the application of an environmental risk assessment (ERA) framework, to assess the risks posed by a PG stack to the surrounding soils, in Sfax, Republic of Tunisia. The ERA followed a weight of evidence approach, supported by two lines of evidence (LoE): the chemical (ChemLoE) and the ecotoxicological (EcotoxLoE). Integrated risks point for risk values greater than 0.5 in soils collected in PG stack surrounding area. Soil salinization, has likely contributed to the exacerbation of risks, as well as to the lack of consistency between both LoEs. This study highlights the need of rethinking the weight given to each LoE in ERA, in areas where soil salinization is a reality.publishe

Teilsysteme ATMOS - Fortfuehrung. Bd. 2. Anlage 7: AMAS/GUS-Kooperation Abschlussbericht

This final report contains the objectives, execution and results of the activities into the project ''ATMOS Subsystem - Continuation''. This project was the immediate continuation of the activities into the study ''ATMOS Subsystems''. The objective of the terms of reference was the concrete treatment of tasks from the instrument program SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) and AMAS (Advanced Millimeterwave Atmospheric Sounder), and mission planning. Mission planning involved investigations of secondary payload launch opportunities of the AMAS instrument on the Russian platforms MIR-2, RESURS-0, METEOR-3M, and RFZ SPEKTR. Within the task ''AMAS-CIS Cooperation'', proposals were indicated for possible CIS cooperations and for further secondary payload launch opportunities on OKEAN-0 and on a multi-purpose space platform. Under the leadership of Jena-Optik, the verification model of a high-resolution optical angle encoder was developed, assembled and verified. This final report comprises five volumes. Volumes 1 and 2 contain the activities into the EGSE, MGSE, EGSE software, calibration device, thermal balance, CIS cooperation and secondary payload launch opportunities. Volumes 3, 4 and 5 comprise the activities into the development and verification of the angle encoder. (orig./AKF)SIGLEAvailable from TIB Hannover: F95B1680+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Alteration of gas exchange after transfer from high CO₂ to ambient air.

<p>Plants were grown in HC and transferred to LC exactly as described in the legend to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0042809#pone-0042809-g001" target="_blank">Figure 1</a> (short day conditions). Net CO₂ uptake (A, at 380 µl L⁻¹ CO₂) and CO₂ compensation points (Γ₂₁) were measured before (HC control) and after (LC; 1, 3 and 5 days) transfer to normal air. Mean values ± SD (n = 5) are shown. Asterisks show significant alterations according to the two-tailed Student's <i>t</i>-test (p<0.05, * to wild-type, ** <i>to hpr1</i>, ⁺ to <i>glyk1</i> and <i>shm1</i> at the corresponding time points).</p

Diel (24 h) leaf growth patterns in high CO₂ and thereafter in ambient air.

<p>Grey (night) and white (day) areas mark the 10/14 h photoperiodic phases. Relative growth rates (RGR, left scale) of the Arabidopsis wild type (A) and photorespiratory mutants <i>hpr1</i> (B), <i>shm1</i> (C), <i>glyk1</i> (D), and <i>pglp1</i> (E) in HC conditions (1% CO₂, open circles) and after HC-to-LC transition in ambient CO₂ (closed circles). Each data point represents the mean RGR ± SE of one-hour average RGR values of the preceding hour individually measured with five leaves, each from another plant. Mean RGR values (RGR averaged over the preceding hour) over the day and night period are shown as horizontal lines (right scale; HC, dashed lines; LC, solid lines).</p

The <i>shm1</i> mutant shows long-term acclimation and survives if initially grown in high CO₂.

<p>(<b>A</b>) PSII efficiency (F_v/F_m) rapidly decreases after transfer to ambient air in source leaves but not in sink leaves. Mean values ± SD (n = 5) are shown. Asterisks mark the significance of alterations according to the two-tailed Student's <i>t</i>-<i>test</i> (p<0.05, * to wild type, ** to <i>shm1</i> outer area of source leaves, and ⁺ to the day before). (<b>B</b>) PSII fluorescence imaging of a <i>shm1</i> rosette illustrating acclimation of sink leaves with a clear gradient toward better performance of the youngest leaves (i) but not of source leaves (o) after two weeks in ambient air. A wild-type rosette is shown for comparison. (<b>C</b>) After transfer to LC, <i>shm1</i> produces new sink-leaves, flowers, siliques, and fertile seeds. The right photo shows a germination test on ½ MS media, compared to wild-type and <i>shm1</i> seeds collected from plants grown produced under elevated CO₂. <i>shm1</i>* labels germinated seeds from <i>shm1</i> plants grown under HC conditions throughout their entire life cycle.</p

Leaf starch contents after transition from high CO₂ to ambient air.

<p>Plants were grown in a 10/14 h day/night cycle in HC. After reaching growth stadium 5.1 <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0042809#pone.0042809-Boyes1" target="_blank">[25]</a>, CO₂ was reduced to LC (ambient air levels). After two days in LC, leaf samples were harvested at the end of the night (EON), the middle (MOD) and the end of the day (EOD). Shown are mean values ± SD (n = 5). Values in bold are significantly different from the LC wild-type control according to the two-tailed Student's <i>t</i>-test (p<0.05).</p