Lacto: A new and healthful frozen dairy product

For several years one of the writers experimented with the preparation of drinks from sour milk flavored with fruit juices. At one time an attempt was made to place such a product on the market, but on account of lack of time for advertising, no great demand for it was created. During the past year the Dairy Section of the Iowa Experiment Station took up the same experiments, hut froze the product to the same consistency as ice cream. At first the experiments were conducted with buttermilk flavored with various fruit juices. So far we have been unable to produce a combination of flavors, with the buttermilk which is absolutely satisfactory, although the buttermilk has been of good quality. Later skimmed milk which had been soured by a commercial lactic acid culture was substituted for the buttermilk. This combined with eggs and the various fruit flavors gave a product which possessed a delicate flavor. We found that many people who disliked the flavor of buttermilk relished this product, which has been called “lacto.

Liquid-infiltrated photonic crystals: Ohmic dissipation and broadening of modes

The pronounced light-matter interactions in photonic crystals make them interesting as opto-fludic "building blocks" for lab-on-a-chip applications. We show how conducting electrolytes cause dissipation and smearing of the density-of-states, thus altering decay dynamics of excited bio-molecules dissolved in the electrolyte. Likewise, we find spatial damping of propagating modes, of the order dB/cm, for naturally occurring electrolytes such as drinking water or physiological salt water.Comment: 9 pages including 2 figure

Recent development on the electrochemical detection of selected pesticides:A focused review

Pesticides are heavily used in agriculture to protect crops from diseases, insects, and weeds. However, only a fraction of the used pesticides reaches the target and the rest slips through the soil, causing the contamination of ground- and surface water resources. Given the emerging interest in the on-site detection of analytes that can replace traditional chromatographic techniques, alternative methods for pesticide measuring have recently encountered remarkable attention. This review gives a focused overview of the literature related to the electrochemical detection of selected pesticides. Here, we focus on the electrochemical detection of three important pesticides; glyphosate, lindane and bentazone using a variety of electrochemical detection techniques, electrode materials, electrolyte media, and sample matrix. The review summarizes the different electrochemical studies and provides an overview of the analytical performances reported such as; the limits of detection and linearity range. This article highlights the advancements in pesticide detection of the selected pesticides using electrochemical methods and point towards the challenges and needed efforts to achieve electrochemical detection suitable for on-site applications