The analysis of variance of a data set made up of 30 sweet corn (Zea mays L.) hybrids evaluated over 5 years for marketable ears (dozens per hectare) indicated a significant genotype (hybrid) × year (GY) interaction. Three selection methods were compared: 1) a conventional method based on mean yield alone (YA), 2) Kang's ranksum (KRS) method, and 3) Kang's modified rank-sum (KMR) method. The number of hybrids selected on the basis of YA, KRS, and KMR was 13. The KRS selected the lowest number of unstable hybrids (three) compared with the YA and KMR, which selected eight and six unstable hybrids, respectively. The mean yields of the selected hybrids were 3034 dozen/ha for YA, 2945 dozen/ha for KRS, and 3019 dozen/ha for KMR. The mean yield of KRS-selected hybrids and KMR-selected hybrids was <2.9% and 0.5%, respectively, than that of YA-based selections. This yield reduction was regarded as insignificant considering the farmer would be able to choose more consistently performing hybrids on the basis of KRS than on the basis of KMR or YA. Heterogeneity due to environmental index is the mean of all genotypes in the jth year and X is the overall mean) was significant and was removed from the GY interaction. The removal of heterogeneity revealed that hybrids 77-2269, 116-Kandy Korn-EH, Golden Queen, 141-Sundance, Merit, and Stowell Evergreen were unstable because of a linear effect of the environmental index, and that hybrids 76-2681 and 806F-Truckers showed stable performance due to a linear effect of the environmental index.

In the title compound, C4H11BrN+·Br−, both ions lie on crystallographic mirror planes. The C...Br distance is 1.943 (4) Å.

Key indicatorsSingle-crystal X-ray study T = 115 K Mean (F-B) = 0.003 Å R factor = 0.027 wR factor = 0.056 Data-to-parameter ratio = 19.2 For details of how these key indicators were automatically derived from the article, see

Materials and Methods Chemicals and reagentsABTS (2,2'-azino-bis (3-ethylbenzothiazoline-6-sufonic acid), potassium persulfate were purchased from Sigma-

vponiorrd ht i he I'mtnl Si»tr> (Htvprnmrnl. Nuthur ih> I'm led Statru nor tttr ( mted State* f.'nrrifv R^nearch and OrvrlopmrM AdminiHtralinn, nor an\ of ihrir *mp1ov^*». nor an\ of thpir con-(ru<'lors, siibtunlrBctorit. or (knr pmplnvNi. makn «n> warrantv. *»prnt* or implied, or mum'* *n\ lefai li»bilil\ or rMponnbilitv for thr arruract oompl*irnnit. or uwfulnM* of anx informuiion. apparaiui, product, or pruorieH diu-loKMl, or reprewnu Itiai m uir would not wtrtnff pnvatriy owned ih NOTICE This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Lnergy Research and Development Administration, nor any of their employees, nor any of their contractor*, subcontractors, or their employees, makes any warranty, impress or implied, o/ assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights. EVALUATION OF LITHIUM BCIRATF. AS ABSTRACTThe Harshaw Model 2271 TL Detector/Dosimeter system with lithium borate dosimeters was evaluated as a 7000-R dosimetry system. One hundred dosimeter cards having two dosimeters per card were irradiated up to ninety-eight times with x rays from a 250-keV (electron energy) GE x-ray machine.A twofold change in calibration was observed during the course of 98 irradiation cycles and a decrease in light output versus time lag between irradiation and reading was observed. The first card "failed" on the 36th cycle and only two cards survived to the 98th cycle. All of the failures were due to damage of the Teflon packaging, causing the dosimeters to hang up in the readout or to move in their card.This system could be used for screwworm fly dosimetry but is not considered ideal.