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Several toxigenic cyanobacteria produce the cyanotoxin (microcystin). Being a health and environmental hazard, screening of water sources for the presence of microcystin is increasingly becoming a recommended environmental procedure in many countries of the world. This study was conducted to assess the ability of freshwater cyanobacterial species Westiellopsis prolifica to produce microcystins in

Osteoporosis and osteoporosis related fractures are a major health care challenge both in Sweden and globally. The cost and suffering from osteoporosis are expected to increase since the population of elderly is increasing. Bone health can be affected by altered mineral homeostasis, which in its turn can be affected by reduced kidney function. However, the course of age-related decline in kidney f

A load frame for in situ mechanical testing is developed for the microtomography end stations at the imaging beamline P05 and the high-energy material science beamline P07 of PETRA III at DESY, both operated by the Helmholtz- Zentrum Geesthacht. The load frame is fully integrated into the beamline control system and can be controlled via a feedback loop. All relevant parameters (load, displacement

Media firms sometimes allow consumers to pay to remove advertisements from an ad-based product. We formally examine an ad-based monopolist's incentives to introduce this option. When deciding whether or not to introduce the option to pay, the monopolist compares the potential direct revenues from consumers who pay, with the lost advertising revenues resulting from the subsequent ad removal. If the

We discuss network neutrality regulation of the Internet in the context of a two-sided market model. Platforms sell broadband Internet access services to residential consumers and may set fees to content and application providers on the Internet. When access is monopolized, cross-group externalities (network effects) can give a rationale for network neutrality regulation (requiring zero fees to co

Private equity firms are often criticized for laying off workers, but the evidence on who loses their jobs and why is scarce. This paper argues that explanations for job polarization also explain layoffs after private equity buyouts. Buyouts reduce agency problems, which triggers automation and off shoring. Using rich employer-employee data, we show that buyouts generally do not affect unemploymen

We establish a correlation between the hierarchical structure of a firm and the likelihood of business creation among its former employees, using a sample of 16 million observations of Swedish workers and a novel proxy for hierarchies based on occupation data. Conditional on firm size and many other variables, employees in firms with more layers are less likely to enter entrepreneurship, to become

An increasingly large share of cross-border acquisitions are undertaken by private equity-firms (PE-firms) and not by traditional multinational enterprises (MNEs). We propose a model of cross-border acquisitions in which MNEs and PE-firms compete over domestic assets and which incorporates endogenous financial frictions. MNEs’ advantages lie in firm-specific synergies and access to internal capita

The authors cast entrepreneurship as one of three career choices—remaining with one’s employer, changing employers, or engaging in entrepreneurship—and theorize how the likelihood of entrepreneurship evolves over one’s career. They empirically demonstrate an inverted U-shaped relationship between accumulated experience and entrepreneurship across various industries and jobs. The authors highlight

The media often cast foreign private equity firms as villains who gamble with local jobs. We use detailed registry data from Sweden to show that foreign buyouts have not affected workers’ labor market outcomes. But domestic buyouts have. They have increased unemployment incidence by a fifth, duration by a third, and lowered labor income by seven percent.

In recent years, the number of listed companies has been declining in many countries across the world. This paper provides a selective survey of the literature on the real economic effects of the stock market to assess the potential effects of this decline and determine whether it is likely to continue. The leading economic role of the stock market's primary market, in which firms raise capital by

Private equity firms (PE firms) have become common owners of established firms in concentrated markets. We show that the threat of a PE acquisition can trigger incumbent mergers in an otherwise merger-stable industry. This can help antitrust authorities maximize consumer surplus because previously privately unprofitable – but consumer surplus-enhancing – mergers now take place. We thus predict tha

This article analyzes the real effects of private equity buyouts. It defines private equity buyouts as gains of established companies accepted by private equity firms. Private equity buyouts are also referred to as leveraged buyouts, management buyouts, and bootstrap acquisitions. The first section explains why buyouts have real economic effects, while the second section presents a survey of empir

We survey the literature on venture capital and institutions and present a case study comparing the development of the venture capital market in the United States and Sweden. Our literature survey underscores that the legal environment, financial market development, the tax system, labor market regulations, and public spending on research and development correlate with venture capital activities a

The tax laws of most developed countries are debt biased since firms can deduct interest on debt but not on equity. This bias is known to distort investment decisions. However, less is known about how the debt tax shield affects the ownership of assets when bidders differ financial expertise and thus in optimal use of leverage. We show that the debt tax shield need not always distort ownership eff

Using a dataset with over 24 million year-employment observations and the universe of more than 230,000 entries into entrepreneurship in one economy we analyze the gross (including the founders), net (excluding the founders), and new (jobs to the former unemployed or those outside the labor force) job creation by entrepreneurs two and six years after start-up. These novel measures of job creation