Testing milk by the babcock procedure

The Babcock test for butterfat is the legally recognized standard test for marketing milk and cream in Missouri. It employs the use of sulphuric acid to digest milk solids other than far and to increase the specific gravity of the serum. Far separates and comes to the top of the mixture when the specific gravity of the non-fat portion is increased; the butter fat is melted by heat from acid digestion of milk solids and by centrifugal force. All calibrated glassware used in making the Babcock test must conform to official specifications prescribed in USDA Circular 434, National Bureau of Standards, Testing Volumetric Glassware, 1941, U.S. Government Printing Office, Washington, D. C.Barry J. Steevens (Department of Dairy Husbandry), Robert T. Marshall (Department of Food Science and Nutrition, College of Agriculture)Revised 1/7

Using the California mastitis test

"One of the best ways to detect mastitis is to use the California Mastitis Test (CMT). A four-compartment paddle and the CMT reagent are the only supplies you need to conduct the test. Conducting the CMT is simple, but before interpreting the results, you need to know what the test measures."--First page.Robert T. Marshall and J.E. Edmondson (Department of Food Science and Nutrition), and Barry J. Steevens (Department of Dairy Science, College of Agriculture)Revised 11/86/6

The Economic Incidence of the Interstate Commerce Act of 1887: A Theoretical and Empirical Analysis of the Short-haul Pricing Constraint

The public and private interest hypotheses permeate contemporary regulatory analyses. Both theories are used to explain the inception of the first major federal regulatory agency, the Interstate Commerce Commission (ICC). According to the public and private interest hypotheses, the regulations promulgated by the ICC benefited either railroads or shippers. This paper presents an alternative view consistent with the multiple interest theory of regulation. It is demonstrated that the major regulatory instrument of the ICC, the short-haul pricing constraint (SHPC), altered the equilibria of railroad markets in a way which benefitted the class of shippers (short-haul shippers) facing monopolistic railroad markets. The SHPC also benefitted some railroads by increasing the correspondence between unregulated, cooperative and regulated, noncooperative levels of long-haul shipments. The proposition that the ICC benefited short-haul shippers and railroads is supported by an empirical analysis of the effects of the inception of federal regulation and implementation of the SHPC on stock prices. The results of the paper indicate that the public and private interest interpretations of the ICC are neither contradictory nor complete, but instead are complementary. A theoretical and empirical analysis of the chief regulatory mechanism of the ICC provides this synthesis

Regulation and the Theory of Legislative Choice: The Interstate Commerce Act of 1887

This article concerns the economic incidence of the Interstate Commerce Act of 1887 (ICA). Our focus is the short-haul pricing constraint, a provision of the ICA that prohibited railroads from charging higher rates to isolated, primarily agrarian shippers than it charged to intercity shippers of similar commodities. Utilizing the event study methodology, we find that the impending passage of the ICA generated a distribution of abnormal returns to railroads and shipping firms that is consistent with the theoretical implications of our analysis of the short- haul pricing constraint (SHPC). However, early interpretations of the SHPC by the Interstate Commerce Commission reduced some of the abnormal returns to railroads in a manner that is inconsistent with the hypothesis that the short-haul pricing constraint was an important mechanism of early railroad regulation. The analysis does support a multiple-interest interpretation of the Interstate Commerce Act and has implications for the positive theory of regulation

Regulation and the theory of legislative choice: The Interstate Commerce Act of 1887

The economic effects of federal regulation cannot be explained from congressional institutions. Two factors determine the specific pattern. The first is how interests are represented in the Congress, especially in the relevant committees. Committees matter because their members can veto proposals made by others. The second factor is bicameralism. The need to build majority support in two chambers matters when interest groups are not distributed identically across both houses. Specific interests win in the legislative process because of their representation within the political institutions. We examine the first major regulatory agency, the Interstate Commerce Commission (ICC), founded in 1887. The inception of the ICC was not solely a cartel mechanism for the railroads (as the pure capture view asserts) nor solely a mechanism to correct market abuses by the railroads (as the public interest theory maintains). The ICC provided an benefits, some to railroads and some to nonrailroad interests, notably shorthaul shippers

Bowel sounds identification and migrating motor complex detection with low-cost piezoelectric acoustic sensing device

Interpretation of bowel sounds (BS) provides a convenient and non-invasive technique to aid in the diagnosis of gastrointestinal (GI) conditions. However, the approach’s potential is limited by variation between BS and their irregular occurrence. A short, manual auscultation is sufficient to aid in diagnosis of only a few conditions. A longer recording has the potential to unlock additional understanding of GI physiology and clinical utility. In this paper, a low-cost and straightforward piezoelectric acoustic sensing device was designed and used for long BS recordings. The migrating motor complex (MMC) cycle was detected using this device and the sound index as the biomarker for MMC phases. This cycle of recurring motility is typically measured using expensive and invasive equipment. We also used our recordings to develop an improved categorization system for BS. Five different types of BS were extracted: the single burst, multiple bursts, continuous random sound, harmonic sound, and their combination. Their acoustic characteristics and distribution are described. The quantities of different BS during two-hour recordings varied considerably from person to person, while the proportions of different types were consistent. The sensing devices provide a useful tool for MMC detection and study of GI physiology and function

Using the California mastitis test (1993)

Reviewed October 1993

Integrated signaling in developing lymphocytes: The role of DNA damage responses

Lymphocyte development occurs in a stepwise progression through distinct developmental stages. This ordered maturation ensures that cells express a single, non-autoreactive antigen receptor, which is the cornerstone of a diverse adaptive immune response. Expression of a mature antigen receptor requires assembly of the antigen receptor genes by the process of V(D)J recombination, a reaction that joins distant gene segments through DNA double-strand break (DSB) intermediates. These physiologic DSBs are generated by the recombinase-activating gene (RAG) -1 and -2 proteins, and their generation is regulated by lymphocyte and developmental stage-specific signals from cytokine receptors and antigen receptor chains. Collectively, these signals ensure that V(D)J recombination of specific antigen receptor genes occurs at discrete developmental stages. Once generated, RAG-induced DSBs activate the ataxia-telangiectasia mutated (ATM) kinase to orchestrate a multifaceted DNA damage response that ensures proper DSB repair. In response to RAG DSBs, ATM also regulates a cell type-specific transcriptional response, and here we discuss how this genetic program integrates with other cellular cues to regulate lymphocyte development

The Economic Incidence of the Interstate Commerce Act of 1887: A Theoretical and Empirical Analysis of the Short-haul Pricing Constraint

The public and private interest hypotheses permeate contemporary regulatory analyses. Both theories are used to explain the inception of the first major federal regulatory agency, the Interstate Commerce Commission (ICC). According to the public and private interest hypotheses, the regulations promulgated by the ICC benefited either railroads or shippers. This paper presents an alternative view consistent with the multiple interest theory of regulation. It is demonstrated that the major regulatory instrument of the ICC, the short-haul pricing constraint (SHPC), altered the equilibria of railroad markets in a way which benefitted the class of shippers (short-haul shippers) facing monopolistic railroad markets. The SHPC also benefitted some railroads by increasing the correspondence between unregulated, cooperative and regulated, noncooperative levels of long-haul shipments. The proposition that the ICC benefited short-haul shippers and railroads is supported by an empirical analysis of the effects of the inception of federal regulation and implementation of the SHPC on stock prices. The results of the paper indicate that the public and private interest interpretations of the ICC are neither contradictory nor complete, but instead are complementary. A theoretical and empirical analysis of the chief regulatory mechanism of the ICC provides this synthesis